Let's start with the fact that each wound has its own general healing time and its own healing rate. I used the settings ("Severe Injuries" and the "Long Healing" trait), here are the healing values ​​for each injury type per 1 in-game minute:

Normal fracture: 0.0006
Fracture with splint: 0.0030
Fracture with comfrey: 0.0012
Fracture with splint and comfrey: 0.0036

Open burn: 0.0006
Bandaged burn: 0.012

Open laceration: 0.00012
Bandaged laceration: 0.006

Open bite: 0.0006
Bandaged bite: 0.012

At first aid level 10:
Fracture with splint: 0.0330 (11 times faster, + 0.0030 per first aid level)

In this mod There are currently several dynamic effects on healing speed, here are the values ​​for each:

1. Moodles (the value is applied once per game minute):
the values ​​in brackets mean each level of this moodle, for example:

{ type = MoodleType.FoodEaten, effects = { 0.0012, 0.0024, 0.0036, 0.0048 } }, -- Saturation

1 level of saturation = +0.0012 to healing speed per 1 game minute
2 level of saturation = +0.0024 to healing speed per 1 game minute

{ type = MoodleType.Hungry, effects = { -0.0010, -0.0020, -0.0030, -0.0040 } }, -- Hunger

1 level of hunger = -0.0010 to healing speed per 1 game minute minute
2 hunger level = -0.0020 to healing rate per 1 game minute

here are all the moodles that affect:

{ type = MoodleType.FoodEaten, effects = { 0.0012, 0.0024, 0.0036, 0.0048 } }, -- Saturation
{ type = MoodleType.Hungry, effects = { -0.0010, -0.0020, -0.0030, -0.0040 } }, -- Hunger
{ type = MoodleType.Tired, effects = { -0.0012, -0.0024, -0.0048, -0.0060 } }, -- Tiredness
{ type = MoodleType.Injured, effects = { -0.0010, -0.0020, -0.0030, -0.0040 } }, -- General health { type = MoodleType.Thirst, effects = { -0.0003, -0.0006, -0.0012, -0.0024 } }, -- Thirst { type = MoodleType.Sick, effects = { -0.0003, -0.0006, -0.0012, -0.0024 } }, -- Sickness { type = MoodleType.Stress, effects = { -0.0001, -0.0003, -0.0006, -0.0010 } }, -- Stress { type = MoodleType.Hyperthermia, effects = { -0.0003, -0.0006, -0.0012, -0.0020 } }, -- Hyperthermia { type = MoodleType.Hypothermia, effects = { -0.0003, -0.0006, -0.0012, -0.0020 } }, -- Hypothermia { type = MoodleType.Bleeding, effects = { -0.0010, -0.0020, -0.0030, -0.0040 } }, -- { type = MoodleType.Wet, effects = { -0.0002, -0.0004, -0.0008, -0.0012 } }, -- Wet { type = MoodleType.HasACold, effects = { -0.0004, -0.0008, -0.0012, -0.0016 } }, -- Cold 2. Treatment of wounds (the value is applied once per game minute)

Depending on the type of bandage you use to treat the wound, the healing speed changes:

Dirty Bandage = -0.0020
AlcoholRippedSheets = +0.0005,
Bandage = +0.0015,
Bandaid = +0.0012,
AlcoholBandage = +0.0020,

There are only 2 bandage effects for a fracture:

Dirty Bandage = +0.0005
Other Bandages = +0.0010

3. Activity (the value is applied once per game minute)

This is where it gets a little more complicated. Activity contains 2 types:
1. Weapon strikes, weapon shots (Applied for each strike with a weapon weighing more than 2 kg or when shooting)
2. Running, sprinting, sleeping, sitting on the ground

Each type has its own expression, in which the value is multiplied by the influence of the body part and the wound for which it is applied:

local bodyTypeValue = { Arm = 0.0005, Body = 0.0010, Leg = 0.0010 }

local activityMultipliers = {
stand = { Arm = 1, Body = 1, Leg = 1 },
sit = { Arm = 2, Body = 1.5, Leg = 2 },
sleep = { Arm = 3, Body = 2.5, Leg = 3 },
run = { Arm = -2, Body = -2, Leg = -3 },
sprint = { Arm = -4, Body = -4, Leg = -6 },
weaponHit = { Arm = -1, Body = -1.5, Leg = -2 }
}

local injuryMultipliers = { -- Injury multipliers
Fracture = { activityMultiplier = 1.5 },
Burn = { activityMultiplier = 1.0 },
Scratch = { activityMultiplier = 0.5 },
Cut = { activityMultiplier = 1.0 },
Bite = { activityMultiplier = 2.0 },
}

then these values ​​are added together

All the resulting values ​​above are finally multiplied by the value of each injury:

local injuryMultipliers = { -- Injury multipliers
Fracture = { effectMultiplier = 5 },
Burn = { effectMultiplier = 2 },
Scratch = { effectMultiplier = 3 },
Cut = { effectMultiplier = 1 },
Bite = { effectMultiplier = 2 },
}

I hope I managed to explain it clearly