RimWorld Wiki - User contributions [en]

Topic:Xcunc4majnlmgsas

2023-02-23T18:14:08Z

Rab (talk | contribs) edited a post on "Surgical operations/success rate"

Topic:Xcunc4majnlmgsas

2023-02-23T18:12:43Z

Rab (talk | contribs) commented on "Surgical operations/success rate" (Oh thanks so much for replying; I realise it's not necessary to constitute my edits, but given that there was an overall "strategy" to a...)

Topic:Xd3xayjdxf14bcqs

2023-02-22T19:40:50Z

Rab (talk | contribs) commented on "Base design" (Hey Turnovus... love your stuff. Got me thinking... saw your compact hospital design. So not to sound negative, but I'm going to punt som...)

Surgery Success Chance Factor

2023-02-22T08:58:10Z

Rab: Corrected use of formatting templates consistent with other wiki pages

{{Verified|1.3.3101}}{{Stat
| default base value = 1
| min value = 0
| to string style = PercentZero
| description = A multiplier to the chance that a surgery will succeed when performed here. Surgery success chances are also affected by many other factors, including the surgeon's ability and medicine used.
}} This stat is applied to beds and other sleeping furniture.

* Note that this stat is specific to the base '''Surgery Success Chance Factor''' of a given ''type'' of [[Sleep furniture]].

* When placed in-world, the '''Surgery Success Chance Factor''' of a specific ''item'' of [[Sleep furniture]] changes. It is additionally weighted by [[#Environmental factors|environmental factors]].

* For the '''Surgery Success Chance''' stat of a specific [[colonist]], see [[Medical Surgery Success Chance]].

* For the '''Surgery Success Chance''' value of a surgical procedure where this '''Surgery Success Chance Factor''' is used, see [[Doctoring#Surgery|Surgery]].

== Stats List ==
Every type of [[Sleep furniture|sleep furniture]]'s '''Surgery Success Chance Factor''' has a base value stat assigned as follows.
{{#ask:
[[Category:Sleep furniture]]
|mainlabel=Sleep furniture type
|?Surgery Success Chance Factor=Surgery Success Chance Factor
}}

== Environmental Factors ==
When placed in-world, the specific ''item'' of [[Sleep furniture]] has its '''Surgery Success Chance Factor''' stat adjusted based on its environment.

This is calculated as:

{| {{STDT|}}
|-
| '''Surgery Success Chance Factor''item''''' = [[#Surgery Success Chance Factor|Surgery Success Chance Factor]]''type'' × [[#Room Cleanliness Multiplier|Room Cleanliness Multiplier]] × [[#Light Multiplier|Light Multiplier]] × [[#Outdoors Multiplier|Outdoors Multiplier]] × [[#Quality Multiplier|Quality Multiplier]] × Product of [[#Facilities Multipliers|Facilities Multipliers]]
|-
|}

=== Room Cleanliness Multiplier ===
The room cleanliness factor for performing surgery is a determined by the value displayed on the [[Rooms#Cleanliness|room's cleanliness]].

{| {{STDT|}}
|-
| '''''Room Cleanliness Factor''''' = 1.05 + [[Rooms#Cleanliness|Room cleanliness]] × 0.09
|-
|}

The resulting value is limited to a minimum of {{bad|0.6}} and a maximum of {{good|1.5}}.

If the surgery is performed outside (i.e. not in a room at all), the cleanliness factor is treated as the minimum.

=== Light Multiplier ===
Extremely low levels of [[Environment#Light|light]] negatively affect the resulting value.

In complete darkness, this can be as little as {{bad|0.75}}. At 50% light level and above, a factor of {{good|1.0}} is applied.

This is referred to as '''Multiplier for light''' within the '''Stats''' tab of the information page.

{| {{STDT|}}
|-
| '''''Multiplier for Light''''' = 0.75 + [[Environment#Light|Light Level]] × 0.5
|-
|}

=== Outdoors Multiplier ===
If the item of sleep furniture is placed performed [[outdoors]] (i.e. there is no room of which the cleanliness may be assessed), an additional multiplier of 0.85 is applied to the resulting chance of surgery success.
{| {{STDT|}}
|-
! Environment Type !! Multiplier
|-
| Indoors || 1.00
|-
| Outdoors || 0.85
|}

=== Quality Multiplier ===
A multiplier based on the [[quality]] of the specific item is applied. This is referred to as the '''Quality Multiplier''' within the '''Stats''' tab of the information page.

{| {{STDT|}}
|-
! Quality !! Multiplier
|-
| Awful || 0.90
|-
| Poor || 0.95
|-
| Normal || 1.00
|-
| Good || 1.05
|-
| Excellent || 1.10
|-
| Masterwork || 1.15
|-
| Legendary || 1.30
|}

=== Facilities Multipliers ===
In addition, ''facilities'' placed adjacent to the head of the item of sleep furniture can adjust the stat of the placed item.

The result of these additional factors are displayed under the '''Facilities''' heading within the '''Stats''' tab of the information page.

{| {{STDT|}}
|-
! Facility Type !! Multiplier
|-
| [[Vitals monitor]] || 1.05
|-
|}

User:Rab

2023-02-22T08:36:40Z

Rab: Created page with "I don't really have anything to say. But by creating my page, my username is blue."

I don't really have anything to say. But by creating my page, my username is blue.

Medical Potency

2023-02-22T08:13:48Z

Rab: Expanded stats page to include list and information on how it is used [note depends on "Treatment" redirect pending moderation]

{{Stat
| default base value = 1
| max value = 2
| min value = 0
| to string style = PercentZero
| description = How effective this is when used to heal wounds and diseases, or do surgery. Higher medical potency improves the chances of a doctor treating wounds properly, and reduces the chances of failure during surgery.
}}

== Stats List ==
Every [[Medicine (disambiguation)|medicine]] has a '''Medical Potency''' stat as listed:
{{#ask:
[[Category:Medicine]]
|mainlabel=Medicine Type
|?Medical Potency Base=Medical Potency
}}

== Use ==
When a [[Medicine (disambiguation)|medicine]] is used to provide [[Treatment|treatment]], its '''Medical Potency''' is used to calculate the outcome of the [[Medical Tend Quality]]. See [[Medical Tend Quality]] for further information on how this is calculated.

When a [[Medicine (disambiguation)|medicine]] is used in an [[operation]], its '''Medical Potency''' is used to calculate the probability of success of the operation. See [[Operation|Operations]] for further information on how this is calculated.

Treatment

2023-02-22T08:00:31Z

Rab: Added redirect to include dereferenced/soft links on other pages to doctoring page

#REDIRECT [[Doctoring#Treatment]]

Topic:Xcunc4majnlmgsas

2023-02-22T08:34:57Z

Rab (talk | contribs) edited a post on "Surgical operations/success rate"

Topic:Xcunc4majnlmgsas

2023-02-22T08:33:10Z

Rab (talk | contribs) edited a post on "Surgical operations/success rate"

Operation

2023-02-18T21:05:47Z

Rab: Updated redirect to use new title (using consistent nomenclature)

#REDIRECT [[Doctoring#Operations_(Surgery)]]

Surgery

2023-02-18T21:05:10Z

Rab: Updated redirect to use new title (using consistent nomenclature)

#REDIRECT [[Doctoring#Operations_(Surgery)]]

Doctoring

2023-02-18T21:02:11Z

Rab: Corrected in-page link

{{Rewrite|reason=Cleanup, fact check, [[Template:Verified|verification]]}}
{{TOCright}}

'''Doctoring''' is a type of work assigned to colonists from the [[Work|Work menu]]. The [[Medical]] skill is the primary determinant for success. Colonists [[incapable]] of Caring will never perform doctor work.

Doctor work assigns pawns to the following jobs: tending to patients, tending to self (if enabled), feeding patients, performing surgical operations, rescuing downed pawns or downed tamed animals, tending to and operating on animals, feeding ill animals, and cheering up patients.

How well a colonist performs in Doctoring mainly depends on their medical [[skill]], the quality of [[medicine]] used, and the cleanliness of the [[room]] in which they are operating. The doctor's physical condition plays an important role, too.

Doctors can heal other colonists, guests, prisoners or animals and will prioritize life-threatening wounds and illnesses before tending minor conditions.

Doctors can "self-tend" at 70% effectiveness to treat their own wounds or illnesses. Disabled by default, the self-tend option can be enabled in a pawn's Health-overview.

== Skill ==
The Medicine skill is the center skill of doctoring in RimWorld. It directly multiplies the treatment quality as well as surgery success chance and healing speed before other factors are taken in. All values in this table take post-processing into account where necessary.

{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 1 !! 2 !! 3 !! 4 !! 5 !! 6 !! 7 !! 8 !! 9 !! 10 !! 11 !! 12 !! 13 !! 14 !! 15 !! 16 !! 17 !! 18 !! 19 !! 20
|-
! Base Treatment Quality
| 20% || 30% || 40% || 50% || 60% || 70% || 80% || 90% || 100% || 105% || 110% || 115% || 120% || 125% || 130% || 135% || 140% || 145% || 150% || 152.5% || 155%
|-
! Base Healing Speed
| 40% || 46% || 52% || 58% || 64% || 70% || 76% || 82% || 88% || 94% || 100% || 106% || 112% || 118% || 124% || 130% || 136% || 142% || 148% || 152% || 160%
|-
! Base Surgery Success Chance
| 20% || 30% || 40% || 50% || 60% || 70% || 80% || 85% || 90% || 92% || 93% || 94% || 95% || 95.5% || 96% || 96.5% || 97% || 97.5% || 98% || 98.5% || 99%
|}

The following table documents a few of many possible combinations of how factors play into a colonist's performance at doctoring (needs updating for A17):

{| {{STDT| sortable c_10 text-center}}
! Colonist
! Medicine Skill
! Base Treatment Quality
! Manipulation <ref>90% importance in treatment quality, effective up to 140%</ref>
! Sight <ref>70% importance in treatment quality, effective up to 140%</ref>
! Final Treatment Quality <ref>To 2 decimal places</ref>
|-
! A <ref>Healthy, practitioner in medicine</ref>
| 6 || 80% || 100% || 100% || '''80%'''
|-
! B <ref>Bad back, frail, and cataracts, visionary in medicine</ref>
| 18 || 200% || 60% || 30% || '''62.72%'''
|-
! C <ref>Fully bionic trauma savant, basic familiarity with medicine</ref>
| 3 || 50% || 190% || 140% || '''89.6%'''
|-
! D <ref>Missing an arm, strong expert with medicine</ref>
| 11 || 130% || 50% || 100% || '''71.5%'''
|}

<references/>

{{Medicine Experience Gain Table|{{STDT| c_10 text-center}}}}

== Medicines ==
Medicine is used to improve the results of doctoring, therefore improving recovery from injuries and disease, and also allowing the performing of surgery. Another perk to using medicine is that medicine is typically able to heal multiple low severity injuries (up to max of 20 damage worth of severity), which is something that 'dry-bandaging' can't do.

There are currently three types of medicine in RimWorld: the organic [[herbal medicine]], the bog standard [[medicine]], and the coveted [[glitterworld medicine]] - in order from least potent to most potent.

It is possible to change the default healthcare given to pawns. Defaults to best meds for colonists and herbal meds for everybody else.{{Check Tag|Detail|How do you do it, what options are available etc. Doesn't necessarily have to be here, but should at least link to the right place.}}

=== Treatment options ===
Five treatment options are available; none at all, doctor care, herbal medicine or worse, regular medicine or worse, or best quality medical care.

For prisoners and guests the default is herbal medicine; colonists default to best care available.

In the early game, however, it is ideal to set the medical policy so that all pawns on the map only get basic doctor treatment. This allows precious medicine to be stockpiled for emergencies an operations rather than wasted on minor injuries.

=== No medical care ===
Somewhat straightforward, this option prevents pawns from receiving any sort of medical care. This will leave them to succumb to their wounds, or die of diseases without anyone to treat them.

As doctor care does not require any medicine, this option is not recommended unless your intent is to let the pawn die.

=== Doctor care, but no medicine ===
[[File:Doctor care but no medicine.png|left]]
Sometimes when supplies are short, or you need to save your stocks of medicine for better purposes, doctors will attempt to improvise a treatment. '''Note''' that it is not possible to do surgeries without medicine, and treatment is much slower than with any form of medicine, especially being unable to treat multiple wounds in a single treatment. Expect many infections from the poor treatment quality.

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 30% || N/A || N/A
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 6% || 15% || 24% || 31.5% || 36% || 40.5% || 45% || 46.5%
|-
! Base Surgery Success
| - || - || - || - || - || - || - || -
|}

=== Herbal medicine ===
[[{{Q|Herbal medicine|Image}}|left|link=Herbal medicine]]
[[Herbal medicine]] is an organic medicine which can be grown from [[healroot]], or purchased from tribal traders. It is not very powerful, and its best application is in treating injuries, the flu, and chronic diseases - but it can be good at treating more severe diseases when used by a skilled and/or enhanced doctor. It's not recommended to use herbal medicine for surgery, but you might just about be able to get away with it if your surgeon is fully bionic and of a very good skill level (at least level 12), but don't expect any miracles.

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 60% || 10 || 0.35
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 12% || 30% || 48% || 63% || 72% || 81% || 90% || 93%
|-
! Base Surgery Success
| 12% || 30% || 48% || 55.2% || 57% || 57.9% || 58.8% || 59.4%
|}

=== Medicine ===
[[{{Q|Medicine|Image}}|left|link=Medicine]]
Standard [[medicine]] is the benchmark of medical treatment solutions, and is also producible at a [[drug lab]] by combining herbal medicine, [[neutroamine]], and [[cloth]]. It can additionally be purchased from outlanders and orbital traders, and is occasionally dropped by pirate raiders and mercenaries.

Medicine is best used for treating severe injuries or illnesses. It also works good enough for most surgeries, though the risk of failure is still present. Odds can be improved by as little as a shot of [[go-juice]] or [[luciferium]] for boosted consciousness.

It's not the best idea to excise cancerous growths using ordinary medicine due to its 0.7x success factor and 25% death chance on failure- unless your surgeon has at least a surgery success chance of 128.5% (achievable with a pair of bionic arms) - which translates to a roughly 90% success chance.

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 100% || 18 || 0.5
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 20% || 50% || 80% || 100% || 100% || 100% || 100% || 100%
|-
! Base Surgery Success
| 20% || 50% || 80% || 92% || 95% || 96.5% || 98% || 99%
|}

=== Glitterworld medicine ===
[[{{Q|Glitterworld medicine|Image}}|left|link=Glitterworld medicine]]

[[Glitterworld medicine]] is the most powerful medicine out of the three types available, and can only be produced on high-tech Glitterworlds. Despite the high price, Glitterworld Medicine carries a value which no other medicine can carry: enhanced medical potency. Naturally, due to the cost, Glitterworld Medicine isn't worth the price for treating trivial diseases or injuries - but it makes surgery ''significantly'' easier, and allows even mediocre doctors to guarantee success in operations.

Whether it be bringing somebody from the jaws of death from the plague or excising cancerous growths, or installing bionics: Glitterworld Medicine is your answer. Injuries and more secure situations with diseases: ordinary medicine will cut it, or even herbal (especially for the former).

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 160% || 50 || 0.5
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 32% || 80% || 100% || 100% || 100% || 100% || 100% || 100%
|-
! Base Surgery Success
| 32% || 80% || 100% || 100% || 100% || 100% || 100% || 100%
|}

== Treatment ==
Basic medical work involving tending to wounds and illnesses. Treating wounds stop them from bleeding and reduce the chance of infections, while tending to illnesses slows them down allowing your colonists' immune systems to catch up and pull ahead.

Each individual treatment can have any quality from 0 - 130%, depending on the medicine used. Higher quality makes infections less likely and slows down illnesses more.

After each treatment there will be text feedback showing the wound/illness tended and the quality of the treatment. Only 1 injury will generate feedback at a time even if multiple are treated at once.

== Operations (Surgery) ==
[[File:Installing bionic arm.png|right|300px]]
An '''operation''' is a [[bill]] to be performed on a [[colonist]] by a doctor. This may involve the removal or addition of [[body parts]], administration of [[drugs]] or excising [[Carcinoma|carcinomas]]. Many operations require a minimum [[Medical|Medical skill]] (e.g. excising a [[carcinoma]] requires level 10). Some operations require a minimum [[medicine]] level ([[Herbal medicine]] is the minimum required medicine for most operations).

=== Operation Success Rate ===
When an operation is performed, a degree of chance is calculated to assess the probability that the outcome of the operation will be successful.

This is determined as a product of:
* The [[#Medical Surgery Success Chance|Surgery Success Chance]] stat of the surgeon performing the operation
* The [[Medical Potency]] stat of the [[Medicine]] used for performing the operation
* The [[Surgery Success Chance Factor]] stat of a [[bed]] or other [[sleep furniture]] upon which the operation is performed
* The [[#Operation Success Rate Multiplier|Success Rate Multiplier]] for the specific operation

This may be expressed as:
{| {{STDT|}}
|-
| '''Operation Success Rate''' = [[#Skill|Surgery Success Chance Surgeon]] × [[Surgery Success Chance Factor|Surgery Success Chance Sleep Furniture]] × [[Medical Potency]] × [[#Operation Success Rate Multiplier|Operation Success Rate Multiplier]]
|-
|}

Note that additionally:
* The resulting '''Operation Success Rate''' is capped at {{%|0.98}}.
* If the '''Operation Success Rate Multiplier''' is ''Can't fail'', the '''Operation Success Rate''' will always be 100%, regardless of any other stats.

==== Operation Success Rate Multiplier ====
{| {{STDT|}}
! Operation !! Operation Success Rate Multiplier (%)
|-
! Administer ''[[Drugs|Drug]]''
| ''Can't fail''
|-
! Anesthetize
| 200
|-
! Euthanize by cut
| 500
|-
! Harvest (''[[Body Parts|body part]]'')
| 120
|-
! Install (''[[Body Parts|body part]]'')
| 120
|-
! Remove (''[[Body Parts|body part]]'')
| 120
|-
|}

''Note that the '''Operation Success Rate Multiplier''' for each operation is shown in-game on the '''Information''' page for an added bill in the [[Colonist]]'s '''Health''' -> '''Operations''' tab.''

=== Failure ===
{{Stub|section=1|reason=How are they selected?}}
If an operation fails then the colonist will take damage, and materials (including prosthetics) will be wasted. For lesser failures, damage is concentrated near the site of the operation, while for the ridiculous failures they can be found anywhere in the body.

There are 3 kinds of surgical failure in-game.
*Minor: Deals a little damage, and will not destroy any body parts.
*Catastrophic: Deals great damage, and usually destroys body parts outright.
*Ridiculous: Deals great damage scattered across the entire body.

In addition, each operation has a death on failure chance; when it fails it is possible that the [[colonist]] instantly dies.

=== Available targets ===
Surgeons can perform operations on colonists, prisoners or guests. Performing any kind of violating operation (such as organ removal) on guests will anger the faction.

Tamed animals can be operated on as well, though there are limited options. [[Downed]] non-tamed animals can also be operated on once dragged to an animal sleeping spot.

Surgeons can also perform an operation on downed mechanoids to remove body parts and to shut them down for good.

=== Tips on Improving Success ===
The difference between a level 10 surgeon (93% base surgery success chance) and a level 20 surgeon (99%) is only a 6.5% gain in surgical success rate. The difference between Herbal Medicine (60% potency) and Glitterworld Medicine (160% potency) is a 167% increase in surgical success rate. Room quality has a great impact, too.

Due to the 98% success cap, using glitterworld medicine for surgeries is mostly only worthwhile in lower-quality surgical environments (less cleanliness, lower quality hospital beds, unskilled doctors). Beyond that point, industrial medicine is sufficient for the purposes of surgery.

== Infection ==
When a bed is set to be medical, selecting it shows the infection chance modifier of the room. The overall chance of infection is affected by tend quality, and then multiplied by the aforementioned number. Any bed, no matter what it is, has a 100% modifier on infection when outdoors, and only an incredibly dirty room can get close to this number. However, even at an 80% modifier, wounds tended by an unskilled doctor using herbal meds is likely to be around 10-20% infection chance '''per wound'''. Averting death by a thousand cuts will quickly become agonizing death by 100 infections in such circumstances.

It is much better to make the hospital as clean as possible. Start by covering or removing all natural floors (dirt, sand etc. but excluding stone) and ensure that the hospital is cleaned before tending to pawns. Keep all pawns, especially animals out to keep the room as clean as possible. Infection chance multiplier will likely become around the 40-50% mark or even lower. Next, unlock sterile tiles. A room with 0.6 cleanliness can have multipliers near 30%. To see the cleanliness of rooms, toggle on the room stats view on the bottom right corner and then mouse over the hospital (or any other room for that matter). Dirt, animal filth among other things drastically reduces cleanliness, and it also reduces beauty. This makes it possible to locate and prioritize cleaning through the beauty view. Remember to clean before the treatment when possible.

One of the most difficult things about keeping a hospital clean is bleeding. Bleeding colonists will leave blood on the floor, and blood reduces cleanliness. Someone hemorrhaging to death may create 4 or 5 blood splatters on the floor in a very short time, and if this is happening to multiple colonists after a disastrous raid, your doctor alone may not be enough to keep the room clean. Bring in another colonist or two to clean up after other patients awaiting treatment. What is important is the cleanliness at the time of treatment.

Other things like the presence of hospital beds and better medicine/doctors can reduce infection chance to next to nothing, and make it a non-issue when it does occasionally arise.

== Doctoring strategies ==
You will often need to make the most out of the doctors you have, to ensure maximum doctoring efficiency and colonist survival rate/ well-being.

=== Triage ===
You should have doctors prioritize treating patients according to their illness/infection/injury severity.

# Bleeding colonists should receive priority care as they may bleed to death or receive nasty infections. Always prioritize colonists closer to death.
#* Colonists about to die (<1 hours until death) are generally not worth saving unless you have extremely good bionic-enhanced doctors that can reach and patch them up in time.
#** Strip them to recover their clothes so they won't receive the deadman's apparel debuff. How you will deal with the dead colonist is up to you.
#* Colonists that are very close (1-4 hours till death) to dying should have the best doctors care over them.
#* Colonists with around 5-8 hours before death can be treated by regular doctors, or by good doctors without medicine.
#* Colonists with 12 hours or more till death can wait.
# Colonists sick with deadly diseases should also receive priority care, especially those with wound [[infection]]s or the [[plague]].
# Non-bleeding colonists aren't in a great risk of both infections or blood loss; they should be put on the bottom of your priority list.

If left undirected, doctors will automatically tend in order:

# The nearest patients that will die from blood loss in 18 hours
# The nearest human patients
# Himself/herself if self-tend is enabled
# (Feed patients in bed)
# (Surgeries)
# (Rescue downed colonists and pets by taking them to bed)
# The nearest non-human patients

Note that this automatic priority does not take into account the overall severity and lethality of all the illnesses, infections, and injuries afflicting patients, other than the death from blood loss in 18 hours limit. Nor does it prioritize colonists over prisoners or visitors. If imminent death is a concern, it's not a good idea to rely on this default behavior.

=== Medicine allocation ===
Doctors will always tend to use the best medicine possible by default. To counteract this, set colonists' healthcare to Normal medicine or worse. Switch to Glitterworld medicine only if the colonist is down with a fast-working illness and you don't have a decent doctor on board, or they are about to receive a difficult operation.

You can also manually forbid medicine so they will be forced to use lower-tier medicine, so you can save your better medicine for later.

You should try to split your medicine apart into many stacks. If a doctor is about to treat a patient and someone else is getting medicine from a stack, your doctor will use medicine from another stack, or if there's none, he will try to dry-bandage the injured colonist. To combat this, you can draft doctors to go towards the medicine stacks, and manually un-draft and assign them to treat colonists when a doctor is finished taking the medicine.

=== Positioning ===
Medicine should always be put near the hospital. Don't put them right inside the hospital as it reduces beauty unless you're willing to build a shelf to put them in.
If you're anticipating the need for a treatment, have a doctor stand near your stocks of medicine. You can immediately get the doctor to heal them without having to have him go to the medicine storage and back, saving time. If using primarily herbal meds then it is best to cool the room. It will rarely be necessary to freeze them, but it could make the difference

=== Hospital design ===
[[File:8 hospital beds compact.png|150px|thumb|right|Compact placement of 8 hospital beds around a [[vitals monitor]].]]
{{Stub|section=1}}
* Assuming you're constructing new beds, or comparing beds of the same quality, prioritize [[hospital bed]]s over other bed types, and beds over [[bedroll]]s. Avoid using [[sleeping spot]]s unless necessary. However, also see the note on quality below.
* Compare the stats of the beds placed in the hospital - while Immunity Gain Speed Factor depends solely on the type of bed, Surgery Success Chance Factor is dependent on [[quality]]. A surgery is more likely to succeed on a Good [[Bed]] than an Awful Hospital Bed, but the opposite is true for surviving or recovering from [[diseases]].
* A well-equipped hospital will have one or more [[vitals monitor]]s, which give a bonus to several doctoring-related values, including fighting [[infection]]s and general healing.
* [[Sterile tile]]s improve cleanliness and thus outcomes. [[Steel tile]]s offer a lesser but still significant buff, and are significantly more accessible due to lower cost and work requirements, as well as being unlocked by a research project that is far more generally useful.
* Ensure that that every bed has 50% [[light]] around it. Consider lighting the entire room to allow you to safely place additional sleeping spots in case of overflow.

== Version history ==
* [[Version/0.9.722|0.9.722]] - Surgery can fail now, sometimes catastrophically. Failure chance is related to the surgeon’s medical skill and the quality of the medicine.
* Alpha 17 - It is now possible to change the default healthcare given to pawns. Defaults to best meds for colonists and herbal meds for everybody else.
* Beta 18 - all surgeries now have a minimum 2% chance of failure, no matter how good everything is.

[[Category:Health]]

Doctoring

2023-02-18T11:25:33Z

Rab: Rewrite as requested. Surgery chance pseudocode replaced with simple equations on correct respective pages. Game fact checks/corrections made. Corrected contradictions with other pages. Note edit tag left in place; additional work needed. [Note attempt to

{{Rewrite|reason=Cleanup, fact check, [[Template:Verified|verification]]}}
{{TOCright}}

'''Doctoring''' is a type of work assigned to colonists from the [[Work|Work menu]]. The [[Medical]] skill is the primary determinant for success. Colonists [[incapable]] of Caring will never perform doctor work.

Doctor work assigns pawns to the following jobs: tending to patients, tending to self (if enabled), feeding patients, performing surgical operations, rescuing downed pawns or downed tamed animals, tending to and operating on animals, feeding ill animals, and cheering up patients.

How well a colonist performs in Doctoring mainly depends on their medical [[skill]], the quality of [[medicine]] used, and the cleanliness of the [[room]] in which they are operating. The doctor's physical condition plays an important role, too.

Doctors can heal other colonists, guests, prisoners or animals and will prioritize life-threatening wounds and illnesses before tending minor conditions.

Doctors can "self-tend" at 70% effectiveness to treat their own wounds or illnesses. Disabled by default, the self-tend option can be enabled in a pawn's Health-overview.

== Skill ==
The Medicine skill is the center skill of doctoring in RimWorld. It directly multiplies the treatment quality as well as surgery success chance and healing speed before other factors are taken in. All values in this table take post-processing into account where necessary.

{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 1 !! 2 !! 3 !! 4 !! 5 !! 6 !! 7 !! 8 !! 9 !! 10 !! 11 !! 12 !! 13 !! 14 !! 15 !! 16 !! 17 !! 18 !! 19 !! 20
|-
! Base Treatment Quality
| 20% || 30% || 40% || 50% || 60% || 70% || 80% || 90% || 100% || 105% || 110% || 115% || 120% || 125% || 130% || 135% || 140% || 145% || 150% || 152.5% || 155%
|-
! Base Healing Speed
| 40% || 46% || 52% || 58% || 64% || 70% || 76% || 82% || 88% || 94% || 100% || 106% || 112% || 118% || 124% || 130% || 136% || 142% || 148% || 152% || 160%
|-
! Base Surgery Success Chance
| 20% || 30% || 40% || 50% || 60% || 70% || 80% || 85% || 90% || 92% || 93% || 94% || 95% || 95.5% || 96% || 96.5% || 97% || 97.5% || 98% || 98.5% || 99%
|}

The following table documents a few of many possible combinations of how factors play into a colonist's performance at doctoring (needs updating for A17):

{| {{STDT| sortable c_10 text-center}}
! Colonist
! Medicine Skill
! Base Treatment Quality
! Manipulation <ref>90% importance in treatment quality, effective up to 140%</ref>
! Sight <ref>70% importance in treatment quality, effective up to 140%</ref>
! Final Treatment Quality <ref>To 2 decimal places</ref>
|-
! A <ref>Healthy, practitioner in medicine</ref>
| 6 || 80% || 100% || 100% || '''80%'''
|-
! B <ref>Bad back, frail, and cataracts, visionary in medicine</ref>
| 18 || 200% || 60% || 30% || '''62.72%'''
|-
! C <ref>Fully bionic trauma savant, basic familiarity with medicine</ref>
| 3 || 50% || 190% || 140% || '''89.6%'''
|-
! D <ref>Missing an arm, strong expert with medicine</ref>
| 11 || 130% || 50% || 100% || '''71.5%'''
|}

<references/>

{{Medicine Experience Gain Table|{{STDT| c_10 text-center}}}}

== Medicines ==
Medicine is used to improve the results of doctoring, therefore improving recovery from injuries and disease, and also allowing the performing of surgery. Another perk to using medicine is that medicine is typically able to heal multiple low severity injuries (up to max of 20 damage worth of severity), which is something that 'dry-bandaging' can't do.

There are currently three types of medicine in RimWorld: the organic [[herbal medicine]], the bog standard [[medicine]], and the coveted [[glitterworld medicine]] - in order from least potent to most potent.

It is possible to change the default healthcare given to pawns. Defaults to best meds for colonists and herbal meds for everybody else.{{Check Tag|Detail|How do you do it, what options are available etc. Doesn't necessarily have to be here, but should at least link to the right place.}}

=== Treatment options ===
Five treatment options are available; none at all, doctor care, herbal medicine or worse, regular medicine or worse, or best quality medical care.

For prisoners and guests the default is herbal medicine; colonists default to best care available.

In the early game, however, it is ideal to set the medical policy so that all pawns on the map only get basic doctor treatment. This allows precious medicine to be stockpiled for emergencies an operations rather than wasted on minor injuries.

=== No medical care ===
Somewhat straightforward, this option prevents pawns from receiving any sort of medical care. This will leave them to succumb to their wounds, or die of diseases without anyone to treat them.

As doctor care does not require any medicine, this option is not recommended unless your intent is to let the pawn die.

=== Doctor care, but no medicine ===
[[File:Doctor care but no medicine.png|left]]
Sometimes when supplies are short, or you need to save your stocks of medicine for better purposes, doctors will attempt to improvise a treatment. '''Note''' that it is not possible to do surgeries without medicine, and treatment is much slower than with any form of medicine, especially being unable to treat multiple wounds in a single treatment. Expect many infections from the poor treatment quality.

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 30% || N/A || N/A
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 6% || 15% || 24% || 31.5% || 36% || 40.5% || 45% || 46.5%
|-
! Base Surgery Success
| - || - || - || - || - || - || - || -
|}

=== Herbal medicine ===
[[{{Q|Herbal medicine|Image}}|left|link=Herbal medicine]]
[[Herbal medicine]] is an organic medicine which can be grown from [[healroot]], or purchased from tribal traders. It is not very powerful, and its best application is in treating injuries, the flu, and chronic diseases - but it can be good at treating more severe diseases when used by a skilled and/or enhanced doctor. It's not recommended to use herbal medicine for surgery, but you might just about be able to get away with it if your surgeon is fully bionic and of a very good skill level (at least level 12), but don't expect any miracles.

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 60% || 10 || 0.35
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 12% || 30% || 48% || 63% || 72% || 81% || 90% || 93%
|-
! Base Surgery Success
| 12% || 30% || 48% || 55.2% || 57% || 57.9% || 58.8% || 59.4%
|}

=== Medicine ===
[[{{Q|Medicine|Image}}|left|link=Medicine]]
Standard [[medicine]] is the benchmark of medical treatment solutions, and is also producible at a [[drug lab]] by combining herbal medicine, [[neutroamine]], and [[cloth]]. It can additionally be purchased from outlanders and orbital traders, and is occasionally dropped by pirate raiders and mercenaries.

Medicine is best used for treating severe injuries or illnesses. It also works good enough for most surgeries, though the risk of failure is still present. Odds can be improved by as little as a shot of [[go-juice]] or [[luciferium]] for boosted consciousness.

It's not the best idea to excise cancerous growths using ordinary medicine due to its 0.7x success factor and 25% death chance on failure- unless your surgeon has at least a surgery success chance of 128.5% (achievable with a pair of bionic arms) - which translates to a roughly 90% success chance.

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 100% || 18 || 0.5
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 20% || 50% || 80% || 100% || 100% || 100% || 100% || 100%
|-
! Base Surgery Success
| 20% || 50% || 80% || 92% || 95% || 96.5% || 98% || 99%
|}

=== Glitterworld medicine ===
[[{{Q|Glitterworld medicine|Image}}|left|link=Glitterworld medicine]]

[[Glitterworld medicine]] is the most powerful medicine out of the three types available, and can only be produced on high-tech Glitterworlds. Despite the high price, Glitterworld Medicine carries a value which no other medicine can carry: enhanced medical potency. Naturally, due to the cost, Glitterworld Medicine isn't worth the price for treating trivial diseases or injuries - but it makes surgery ''significantly'' easier, and allows even mediocre doctors to guarantee success in operations.

Whether it be bringing somebody from the jaws of death from the plague or excising cancerous growths, or installing bionics: Glitterworld Medicine is your answer. Injuries and more secure situations with diseases: ordinary medicine will cut it, or even herbal (especially for the former).

{| {{STDT| c_10 text-center}}
! Attributes
! Medical Potency !! Market Value !! Mass (kg)
|-
! Values
| 160% || 50 || 0.5
|}

'''Treatment quality'''
{| {{STDT| c_10 text-center}}
! Doctor Level
! 0 !! 3 !! 6 !! 9 !! 12 !! 15 !! 18 !! 20
|-
! Base Avg. Quality
| 32% || 80% || 100% || 100% || 100% || 100% || 100% || 100%
|-
! Base Surgery Success
| 32% || 80% || 100% || 100% || 100% || 100% || 100% || 100%
|}

== Treatment ==
Basic medical work involving tending to wounds and illnesses. Treating wounds stop them from bleeding and reduce the chance of infections, while tending to illnesses slows them down allowing your colonists' immune systems to catch up and pull ahead.

Each individual treatment can have any quality from 0 - 130%, depending on the medicine used. Higher quality makes infections less likely and slows down illnesses more.

After each treatment there will be text feedback showing the wound/illness tended and the quality of the treatment. Only 1 injury will generate feedback at a time even if multiple are treated at once.

== Operations (Surgery) ==
[[File:Installing bionic arm.png|right|300px]]
An '''operation''' is a [[bill]] to be performed on a [[colonist]] by a doctor. This may involve the removal or addition of [[body parts]], administration of [[drugs]] or excising [[Carcinoma|carcinomas]]. Many operations require a minimum [[Medical|Medical skill]] (e.g. excising a [[carcinoma]] requires level 10). Some operations require a minimum [[medicine]] level ([[Herbal medicine]] is the minimum required medicine for most operations).

=== Operation Success Rate ===
When an operation is performed, a degree of chance is calculated to assess the probability that the outcome of the operation will be successful.

This is determined as a product of:
* The [[#Medical Surgery Success Chance|Surgery Success Chance]] stat of the surgeon performing the operation
* The [[Medical Potency]] stat of the [[Medicine]] used for performing the operation
* The [[Surgery Success Chance]] stat of the placed item of [[sleep furniture]] upon which the operation is performed
* The [[#Success Rate Multiplier|Success Rate Multiplier]] for the specific operation

This may be expressed as:
{| {{STDT|}}
|-
| '''Operation Success Rate''' = [[#Skill|Surgery Success Chance Surgeon]] × [[Surgery Success Chance|Surgery Success Chance Sleep Furniture]] × [[Medical Potency]] × [[#Operation Success Rate Multiplier|Operation Success Rate Multiplier]]
|-
|}

Note that additionally:
* The resulting '''Operation Success Rate''' is capped at {{%|0.98}}.
* If the '''Operation Success Rate Multiplier''' is ''Can't fail'', the '''Operation Success Rate''' will always be 100%, regardless of any other stats.

==== Operation Success Rate Multiplier ====
{| {{STDT|}}
! Operation !! Operation Success Rate Multiplier (%)
|-
! Administer ''[[Drugs|Drug]]''
| ''Can't fail''
|-
! Anesthetize
| 200
|-
! Euthanize by cut
| 500
|-
! Harvest (''[[Body Parts|body part]]'')
| 120
|-
! Install (''[[Body Parts|body part]]'')
| 120
|-
! Remove (''[[Body Parts|body part]]'')
| 120
|-
|}

''Note that the '''Operation Success Rate Multiplier''' for each operation is shown in-game on the '''Information''' page for an added bill in the [[Colonist]]'s '''Health''' -> '''Operations''' tab.''

=== Failure ===
{{Stub|section=1|reason=How are they selected?}}
If an operation fails then the colonist will take damage, and materials (including prosthetics) will be wasted. For lesser failures, damage is concentrated near the site of the operation, while for the ridiculous failures they can be found anywhere in the body.

There are 3 kinds of surgical failure in-game.
*Minor: Deals a little damage, and will not destroy any body parts.
*Catastrophic: Deals great damage, and usually destroys body parts outright.
*Ridiculous: Deals great damage scattered across the entire body.

In addition, each operation has a death on failure chance; when it fails it is possible that the [[colonist]] instantly dies.

=== Available targets ===
Surgeons can perform operations on colonists, prisoners or guests. Performing any kind of violating operation (such as organ removal) on guests will anger the faction.

Tamed animals can be operated on as well, though there are limited options. [[Downed]] non-tamed animals can also be operated on once dragged to an animal sleeping spot.

Surgeons can also perform an operation on downed mechanoids to remove body parts and to shut them down for good.

=== Tips on Improving Success ===
The difference between a level 10 surgeon (93% base surgery success chance) and a level 20 surgeon (99%) is only a 6.5% gain in surgical success rate. The difference between Herbal Medicine (60% potency) and Glitterworld Medicine (160% potency) is a 167% increase in surgical success rate. Room quality has a great impact, too.

Due to the 98% success cap, using glitterworld medicine for surgeries is mostly only worthwhile in lower-quality surgical environments (less cleanliness, lower quality hospital beds, unskilled doctors). Beyond that point, industrial medicine is sufficient for the purposes of surgery.

== Infection ==
When a bed is set to be medical, selecting it shows the infection chance modifier of the room. The overall chance of infection is affected by tend quality, and then multiplied by the aforementioned number. Any bed, no matter what it is, has a 100% modifier on infection when outdoors, and only an incredibly dirty room can get close to this number. However, even at an 80% modifier, wounds tended by an unskilled doctor using herbal meds is likely to be around 10-20% infection chance '''per wound'''. Averting death by a thousand cuts will quickly become agonizing death by 100 infections in such circumstances.

It is much better to make the hospital as clean as possible. Start by covering or removing all natural floors (dirt, sand etc. but excluding stone) and ensure that the hospital is cleaned before tending to pawns. Keep all pawns, especially animals out to keep the room as clean as possible. Infection chance multiplier will likely become around the 40-50% mark or even lower. Next, unlock sterile tiles. A room with 0.6 cleanliness can have multipliers near 30%. To see the cleanliness of rooms, toggle on the room stats view on the bottom right corner and then mouse over the hospital (or any other room for that matter). Dirt, animal filth among other things drastically reduces cleanliness, and it also reduces beauty. This makes it possible to locate and prioritize cleaning through the beauty view. Remember to clean before the treatment when possible.

One of the most difficult things about keeping a hospital clean is bleeding. Bleeding colonists will leave blood on the floor, and blood reduces cleanliness. Someone hemorrhaging to death may create 4 or 5 blood splatters on the floor in a very short time, and if this is happening to multiple colonists after a disastrous raid, your doctor alone may not be enough to keep the room clean. Bring in another colonist or two to clean up after other patients awaiting treatment. What is important is the cleanliness at the time of treatment.

Other things like the presence of hospital beds and better medicine/doctors can reduce infection chance to next to nothing, and make it a non-issue when it does occasionally arise.

== Doctoring strategies ==
You will often need to make the most out of the doctors you have, to ensure maximum doctoring efficiency and colonist survival rate/ well-being.

=== Triage ===
You should have doctors prioritize treating patients according to their illness/infection/injury severity.

# Bleeding colonists should receive priority care as they may bleed to death or receive nasty infections. Always prioritize colonists closer to death.
#* Colonists about to die (<1 hours until death) are generally not worth saving unless you have extremely good bionic-enhanced doctors that can reach and patch them up in time.
#** Strip them to recover their clothes so they won't receive the deadman's apparel debuff. How you will deal with the dead colonist is up to you.
#* Colonists that are very close (1-4 hours till death) to dying should have the best doctors care over them.
#* Colonists with around 5-8 hours before death can be treated by regular doctors, or by good doctors without medicine.
#* Colonists with 12 hours or more till death can wait.
# Colonists sick with deadly diseases should also receive priority care, especially those with wound [[infection]]s or the [[plague]].
# Non-bleeding colonists aren't in a great risk of both infections or blood loss; they should be put on the bottom of your priority list.

If left undirected, doctors will automatically tend in order:

# The nearest patients that will die from blood loss in 18 hours
# The nearest human patients
# Himself/herself if self-tend is enabled
# (Feed patients in bed)
# (Surgeries)
# (Rescue downed colonists and pets by taking them to bed)
# The nearest non-human patients

Note that this automatic priority does not take into account the overall severity and lethality of all the illnesses, infections, and injuries afflicting patients, other than the death from blood loss in 18 hours limit. Nor does it prioritize colonists over prisoners or visitors. If imminent death is a concern, it's not a good idea to rely on this default behavior.

=== Medicine allocation ===
Doctors will always tend to use the best medicine possible by default. To counteract this, set colonists' healthcare to Normal medicine or worse. Switch to Glitterworld medicine only if the colonist is down with a fast-working illness and you don't have a decent doctor on board, or they are about to receive a difficult operation.

You can also manually forbid medicine so they will be forced to use lower-tier medicine, so you can save your better medicine for later.

You should try to split your medicine apart into many stacks. If a doctor is about to treat a patient and someone else is getting medicine from a stack, your doctor will use medicine from another stack, or if there's none, he will try to dry-bandage the injured colonist. To combat this, you can draft doctors to go towards the medicine stacks, and manually un-draft and assign them to treat colonists when a doctor is finished taking the medicine.

=== Positioning ===
Medicine should always be put near the hospital. Don't put them right inside the hospital as it reduces beauty unless you're willing to build a shelf to put them in.
If you're anticipating the need for a treatment, have a doctor stand near your stocks of medicine. You can immediately get the doctor to heal them without having to have him go to the medicine storage and back, saving time. If using primarily herbal meds then it is best to cool the room. It will rarely be necessary to freeze them, but it could make the difference

=== Hospital design ===
[[File:8 hospital beds compact.png|150px|thumb|right|Compact placement of 8 hospital beds around a [[vitals monitor]].]]
{{Stub|section=1}}
* Assuming you're constructing new beds, or comparing beds of the same quality, prioritize [[hospital bed]]s over other bed types, and beds over [[bedroll]]s. Avoid using [[sleeping spot]]s unless necessary. However, also see the note on quality below.
* Compare the stats of the beds placed in the hospital - while Immunity Gain Speed Factor depends solely on the type of bed, Surgery Success Chance Factor is dependent on [[quality]]. A surgery is more likely to succeed on a Good [[Bed]] than an Awful Hospital Bed, but the opposite is true for surviving or recovering from [[diseases]].
* A well-equipped hospital will have one or more [[vitals monitor]]s, which give a bonus to several doctoring-related values, including fighting [[infection]]s and general healing.
* [[Sterile tile]]s improve cleanliness and thus outcomes. [[Steel tile]]s offer a lesser but still significant buff, and are significantly more accessible due to lower cost and work requirements, as well as being unlocked by a research project that is far more generally useful.
* Ensure that that every bed has 50% [[light]] around it. Consider lighting the entire room to allow you to safely place additional sleeping spots in case of overflow.

== Version history ==
* [[Version/0.9.722|0.9.722]] - Surgery can fail now, sometimes catastrophically. Failure chance is related to the surgeon’s medical skill and the quality of the medicine.
* Alpha 17 - It is now possible to change the default healthcare given to pawns. Defaults to best meds for colonists and herbal meds for everybody else.
* Beta 18 - all surgeries now have a minimum 2% chance of failure, no matter how good everything is.

[[Category:Health]]

Topic:Xcunc4majnlmgsas

2023-02-18T15:45:03Z

Rab (talk | contribs) edited a post on "Surgical operations/success rate"

Topic:Xcunc4majnlmgsas

2023-02-18T15:43:59Z

Rab (talk | contribs) commented on "Surgical operations/success rate" (Hi Harakoni... Just to let you know that I've started making some checks and corrections to the surgery section and other related pages....)

Surgery Success Chance Factor

2023-02-17T14:59:48Z

Rab: Added clarification and breakdowns, consolidating some of the (now verified/corrected) inconsistent information on other pages

{{Verified|1.3.3101}}{{Stat
| default base value = 1
| min value = 0
| to string style = PercentZero
| description = A multiplier to the chance that a surgery will succeed when performed here. Surgery success chances are also affected by many other factors, including the surgeon's ability and medicine used.
}} This stat is applied to beds and other sleeping furniture.

* Note that this stat is specific to the base '''Surgery Success Chance Factor''' of a given ''type'' of [[Sleep furniture]].

* When placed in-world, the '''Surgery Success Chance Factor''' of a specific ''item'' of [[Sleep furniture]] changes. It is additionally weighted by [[#Environmental factors|environmental factors]].

* For the '''Surgery Success Chance''' stat of a specific [[colonist]], see [[Medical Surgery Success Chance]].

* For the '''Surgery Success Chance''' value of a surgical procedure where this '''Surgery Success Chance Factor''' is used, see [[Doctoring#Surgery|Surgery]].

== Examples ==
Every type of [[Sleep furniture|sleep furniture]]'s [[Surgery Success Chance|Surgery success chance]] has a base value stat assigned.
{{#ask:
[[Category:Sleep furniture]]
|mainlabel=Sleep furniture type
|?Surgery Success Chance Factor=Surgery Success Chance Factor
}}

== Environmental Factors ==
When placed in-world, the specific ''item'' of [[Sleep furniture]] has its '''Surgery Success Chance Factor''' stat adjusted based on its environment.

This is calculated as:

{| class="wikitable"
|-
'''Surgery Success Chance Factor''item''''' = [[#Surgery Success Chance Factor|Surgery Success Chance Factor]]''type'' × [[#Room Cleanliness Multiplier|Room Cleanliness Multiplier]] × [[#Light Multiplier|Light Multiplier]] × [[#Outdoors Multiplier|Outdoors Multiplier]] × [[#Quality Multiplier|Quality Multiplier]] × Product of [[#Facilities Multipliers|Facilities Multipliers]]
|-
|}

=== Room Cleanliness Multiplier ===
The room cleanliness factor for performing surgery is a determined by the value displayed on the [[Rooms#Cleanliness|room's cleanliness]].

'''''Room Cleanliness Factor''''' = 1.05 + [[Rooms#Cleanliness|Room cleanliness]] × 0.09

The resulting value is limited to a minimum of 0.6 and a maximum of 1.5.

If the surgery is performed outside (i.e. not in a room at all), the cleanliness factor is treated as the minimum.

=== Light Multiplier ===
Extremely low levels of [[Environment#Light|light]] negatively affect the resulting value.

In complete darkness, this can be as little as 0.75. At 50% light level and above, a factor of 1 is applied.

This is referred to as '''Multiplier for light''' within the '''Stats''' tab of the information page.

'''''Multiplier for Light''''' = 0.75 + [[Environment#Light|Light Level]] × 0.5

=== Outdoors Multiplier ===
If the item of sleep furniture is placed performed [[outdoors]] (i.e. there is no room of which the cleanliness may be assessed), an additional multiplier of 0.85 is applied to the resulting chance of surgery success.
{| class="wikitable"
|-
! Environment Type !! Multiplier
|-
| Indoors || 1.00
|-
| Outdoors || 0.85
|}

=== Quality Multiplier ===
A multiplier based on the [[quality]] of the specific item is applied. This is referred to as the '''Quality Multiplier''' within the '''Stats''' tab of the information page.

{| class="wikitable"
|-
! Quality !! Multiplier
|-
| Awful || 0.90
|-
| Poor || 0.95
|-
| Normal || 1.00
|-
| Good || 1.05
|-
| Excellent || 1.10
|-
| Masterwork || 1.15
|-
| Legendary || 1.30
|}

=== Facilities Multipliers ===
In addition, ''facilities'' placed adjacent to the head of the item of sleep furniture can adjust the stat of the placed item.

The result of these additional factors are displayed under the '''Facilities''' heading within the '''Stats''' tab of the information page.

{| class="wikitable"
|-
! Facility Type !! Multiplier
|-
| [[Vitals monitor]] || 1.05
|-
|}