Table 1. Screening questionnaire.

Screening for musculoskeletal impairment	Yes	No
1. Is any part of your body missing or misshapen?	❍	❍
2. Do you have any difficulty using your arms?	❍	❍
3. Do you have any difficulty using your legs?	❍	❍
4. Do you have any difficulty using any other part of your body?	❍	❍
5. Do you need a mobility aid or prosthesis?	❍	❍
6. Do you have convulsions, involuntary movement, rigidity or loss of consciousness?	❍	❍
If any of the answers are "yes”:
7. Has it lasted more than one month or is it permanent?	❍	❍