The Injury Impairment Scale (IIS) and Injury Disability Scale (IDS) was developed to evaluate the impact of traumatic injury on a patient. The Injury Disability Scale can be estimated from the IIS based on the person's available resources and underlying conditions. The authors are from Rochester General Hospital (New York) and the General Motors Research Laboratories.
IIS parameters:
(1) mobility and dexterity
(2) cognitive and psychological
(3) cosmetic disfigurement
(4) sensory
(5) pain
(6) sexual and reproduction
|
Parameters |
Level of Impairment |
Grade |
|---|---|---|
|
mobility and dexterity |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
|
severe |
4 |
|
|
very severe |
5 |
|
|
totally immobile and dependent |
6 |
|
cognitive and psychological |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
|
severe |
4 |
|
|
very severe |
5 |
|
|
comatose |
6 |
|
cosmetic or disfigurement |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
|
severe |
4 |
|
vision |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
|
severe |
4 |
|
hearing |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
sensation |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
taste and smell |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
pain |
normal |
0 |
|
|
minor |
1 |
|
|
moderate |
2 |
|
|
serious |
3 |
|
|
severe |
4 |
|
|
very severe |
5 |
|
|
total impairment |
6 |
|
sexuality, reproduction |
normal |
0 |
|
|
minor (decreased frequency of intercourse) |
1 |
|
|
moderate (partial loss) |
2 |
|
|
serious (complete loss) |
3 |
|
Disability Level |
IDS Scale |
|---|---|
|
no disability (able to be fully employed and pursue full recreational activities) |
0 |
|
minor (self support with reduced recreational activities) |
1 |
|
moderate (self support with no recreational activity) |
2 |
|
serious (independent living; may or may not require some assistance with activities of daily living; may be able to work part-time) |
3 |
|
severe (living at home with assistance of an aid less than 4 hours per day, or requires some assistance with shopping, meal preparation, or medications) |
4 |
|
very severe (full care at home with assistance more than 4 hours a day, or institutional care providing some assistance with activities of daily living) |
5 |
|
extreme (requires institutional care with an external life support system) |
6 |
Parameters used to derive the IDS from maximum IIS:
(1) age
(2) education
(3) employment before the injury
(4) availability of rehabilitation services
(5) marital status
(6) adult children
(7) past medical history
(8) personal assets
|
Parameter |
Finding |
Adjustment Points |
|---|---|---|
|
age in years |
|
+0.01 * (age) |
|
education |
less than high school |
+1 |
|
|
high school diploma |
0 |
|
|
associate degree |
-0.2 |
|
|
BA degree |
-0.5 |
|
|
MA degree |
-0.6 |
|
|
PhD, MD, LLD, etc |
-0.8 |
|
employment |
worked full time (including housewife) |
-0.5 |
|
|
did not work full time |
0 |
|
rehabilitation services |
available through community or employer |
-0.2 |
|
|
not readily available |
0 |
|
marital status |
married and living with spouse |
-0.5 |
|
|
not married or living with a spouse |
0 |
|
adult children |
live within 50 miles |
-0.2 |
|
|
live more than 50 miles away |
0 |
|
|
no adult children |
0 |
|
past medical history |
permanent impaired before accident |
+0.5 |
|
|
no impaired |
0 |
|
personal assets |
affluent |
-1.0 |
|
|
not affluent |
0 |
where:
• Affluence was a net worth > $100,000 in 1990.
total adjustment points =
= SUM(points for all 8 parameters)
estimated IDS from IIS =
= (maximum grade for IIS) + (total adjustment points)
Purpose: To evaluate the level of disability following trauma using the Injury Impairment and Injury Disability Scales (IIS and IDS).
Specialty: Sports Medicine & Rehabilitation
Objective: disability and performance
ICD-10: Z73.6,
