Table 4 Reliability indices of the Persian version of 12-item WHODAS 2.0 in phone-based survey (N = 50)
Subscales (items) | Mean (SD) | Cronbach’s alpha | ICC (95% CI) | Agreement | Kendall's tau-b* | |
|---|---|---|---|---|---|---|
test | Retest | |||||
Cognition (3 & 6) | 3.10 (1.90) | 2.86 (1.80) | 0.79 | 0.93 (0.87–0.96) | Excellent | 0.71 |
Mobility (1 & 7) | 7.02 (2.69) | 7.06 (2.62) | 0.84 | 0.99 (0.98–0.99) | Excellent | 0.91 |
Self-care (8 & 9) | 3.64 (2.26) | 3.36 (2.07) | 0.77 | 0.92 (0.85–0.95) | Excellent | 0.75 |
Getting along (10 & 11) | 5.56 (2.34) | 4.94 (2.19) | 0.78 | 0.89 (0.78–0.94) | Good | 0.75 |
Life activities (12 & 2) | 6.68 (1.47) | 6.50 (1.43) | 0.75 | 0.94 (0.89–0.97) | Excellent | 0.87 |
Participation (4 & 5) | 5.90 (1.84) | 5.68 (1.74) | 0.76 | 0.96 (0.93–0.98) | Excellent | 0.84 |
Total score | 31.90 (9.52) | 30.40 (8.68) | 0.81 | 0.97 (0.92–0.98) | Excellent | 0.82 |