World Health Organisation Disability Assessment Schedule (WHODAS 2.0): development and validation of the Nigerian Igbo version in patients with chronic low back pain

Table 3 Reliability of Igbo-WHODAS

Igbo-WHODAS total score Number of items: 36; Cronbach’s alpha global score: 0.97; ICC (95% CI): 0.93 (0.88, 0.96)
SEM: 5.05 MDC: 13.99
Igbo-WHODAS 2.0 (cognition) Number of items: 6; Cronbach’s alpha global score: 0.88; ICC (95% CI): 0.87 (0.77, 0.93)
SEM: 7.20 MDC: 19.96
Igbo-WHODAS 2.0 (mobility) Number of items: 5; Cronbach’s alpha global score: 0.91; ICC (95% CI): 0.90 (0.83, 0.94)
SEM: 8.00 MDC: 22.17
Igbo-WHODAS 2.0 (self-care) Number of items: 4; Cronbach’s alpha global score: 0.75; ICC (95% CI): 0.82 (0.68, 0.90)
SEM: 7.20 MDC: 20.35
Igbo-WHODAS 2.0 (getting along with people) Number of items: 5; Cronbach’s alpha global score: 0.81; ICC (95% CI): 0.81 (0.66, 0.89)
SEM: 7.20 MDC: 20.35
Igbo-WHODAS 2.0 (life activities) Number of items: 8; Cronbach’s alpha global score: 0.95; ICC (95% CI): 0.93 (0.87, 0.96)
SEM: 8.70 MDC: 24.11
Igbo-WHODAS 2.0 (participation) Number of items: 8; Cronbach’s alpha global score: 0.92; ICC (95% CI): 0.85 (0.73, 0.91)
SEM: 11.10 MDC: 30.77

ICC Intraclass correlation coefficient, SEM Standard error of measurement, MDC Minimal detectable change, CI Confidence interval

ISSN: 1471-2474