Table 1. Reliability of the 32 and the 36 questions of the Brazilian Portuguese version of the WHODAS 2.0 questionnaire, using the mean score and SD for each one of its domains.
| Factor (domains) | Mean | SD | N | Cronbach's Alpha if item deleted |
|---|---|---|---|---|
| With 32 questions of the Brazilian Portuguese version of the WHODAS 2.0a | ||||
| D1- Cognition | 21.420 | 18.214 | 636 | 0.826 |
| D2- Mobility | 13.760 | 19.013 | 636 | 0.815 |
| D3- Self-care | 5.367 | 12.338 | 636 | 0.844 |
| D4- Getting along | 14.592 | 20.240 | 636 | 0.823 |
| D5a- Life activities: household | 23.354 | 28.348 | 636 | 0.806 |
| D6- Participation | 20.336 | 20.717 | 636 | 0.793 |
| With all 36 questions of the Brazilian Portuguese version of the WHODAS 2.0b | ||||
| D1- Cognition | 20.108 | 17.392 | 297 | 0.870 |
| D2- Mobility | 10.212 | 15.725 | 297 | 0.863 |
| D3- Self-care | 4.602 | 11.099 | 297 | 0.881 |
| D4- Getting along | 12.675 | 18.231 | 297 | 0.867 |
| D5a- Life activities: household | 20.146 | 27.072 | 297 | 0.850 |
| D5b- Life activities: work and school | 15.897 | 23.646 | 297 | 0.845 |
| D6- Participation | 17.432 | 19.784 | 297 | o.844 |
Abbreviations: SD, standard deviation; WHODAS 2.0, World Health Organizaton Disability Assessment Schedule 2.0.
a
Cronbach's Alpha = 0.929 → Number of items = 32 (questions), Cronbach's Alpha = 0.845 → Number of items = 6 (domains).
b
Cronbach's Alpha = 0.944 → Number of items= 36 (questions); Cronbach's Alpha = 0.879 → Number of items = 7 (domains).