Table 2

 Comparison of clinical characteristics and drug use of cases and controls

Clinical characteristicCases (n = 2719)Controls (n = 2719)Difference (95% CI)p Value
Values are mean (SD) or n (%).
CI, confidence interval; HRT, hormone replacement therapy.
Age (years)75 (10)75 (10)
Weight (kg)61.88 (13.14)64.60 (12.89)2.72 (1.91 to 3.53)0.122
Height (cm)157.43 (13.15)158.25 (13.28)0.82 (−0.46 to 1.67)0.804
Steroid users (1+ prescriptions in year before fracture)459 (16.9%)121 (4.5%)12.43 (10.82 to 14.04)<0.001
Women reporting back pain in year before fracture540 (19.9%)71 (2.6%)17.25 (15.64 to 18.86)<0.001
Number (%) with a previous non-vertebral fracture.864 (31.8%)516 (19.0%)12.80 (10.51 to 15.08)<0.001
Bone drug prescriptions
    Bisphosphonates213 (7.8%)31 (1.1%)6.70 (5.62 to 7.78)<0.001
    HRT123 (4.5%)94 (3.5%)1.00 (−0.04 to 2.04)0.045
    Calcium and vitamin D75 (2.8%)24 (0.9%)1.90 (1.19 to 2.61)<0.001
    Raloxifene0 (0)0 (0)0 (0)