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Table 2 Baseline distribution and internal consistency of OPAQ scales

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

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