Detecting anxiety and depression among people with limited literacy living with chronic low back pain in Nigeria: adaptation and validation of the hospital anxiety and depression scale

Table 4 Reliability of Igbo-HADS [obtained from participants from rural and urban Nigerian communities involved in the test-retest reliability testing on 11 August 2014]

Igbo-HADS anxiety subscale Number of items: 7; Cronbach’s alpha global score: 0.78; ICC (95% CI): 0.76 (0.58, 0.86)
Cronbach’s alpha If Item Deleted
A1	A3	A5	A7	A9	A11	A13
0.78	0.75	0.75	0.79	0.72	0.75	0.72
SEM: 2.25 MDC: 6.23
Igbo-HADS depression subscale Number of items: 7; Cronbach’s alpha global score: 0.67; ICC (95% CI): 0.75 (0.55, 0.86)
Cronbach’s alpha If Item Deleted
D2	D4	D6	D8	D10	D12	D14
0.62	0.63	0.60	0.68	0.64	0.59	0.68
SEM: 1.82 MDC: 5.06

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

ISSN: 2049-3258