Psychometric properties of the osteoporosis assessment questionnaire (OPAQ) 2.0: results from the multiple outcomes of raloxifene evaluation (MORE) study

Table 2 Baseline distribution and internal consistency of OPAQ scales

OPAQ Scales	N	Mean	SD	Min	Max	Cronbach’s Alpha
Walking/bending	1471	84.24	18.0	4	100	0.82
Standing/sitting	1472	78.71	22.2	0	100	0.73
Dressing/reaching	1471	92.05	16.4	0	100	0.68
Household/self-care	1469	91.58	14.9	13	100	0.61
Transfers	1468	90.18	19.0	0	100	0.88
Usual work	1471	90.52	18.1	0	100	N/A
Fear of falls	1473	71.86	20.8	0	100	0.82
Level of tension	1469	66.95	18.0	10	100	0.90
Body image	1468	64.56	25.9	0	100	0.76
Independence	1469	82.75	17.8	0	100	0.71
Back pain	1475	71.72	24.6	0	100	0.86
Fatigue	1472	61.82	19.6	0	100	0.68
Social activity	1470	40.17	19.4	0	100	0.66
Support, family and friends	1469	85.06	20.8	0	100	0.78

Abbreviations: N/A = not applicable, the scale of Usual Work only has one OPAQ item 44; OPAQ = Osteoporosis Assessment Questionnaire; SD = standard deviation.

ISSN: 1471-2474