Table 2.

Predictors of refracture: results of the Cox’s proportional hazard model

Predictor	Unit of comparison	HR and 95% CI	P value
Gender	Women vs men	1.39 (0.68 to 2.83)	0.362
Age	+5 years	0.97 (0.82 to 1.13)	0.662
Index fracture	Major or hip vs all other	0.68 (0.35 to 1.33)	0.263
BMD	−0.12 g/cm2	1.30 (0.95 to 1.78)	0.101
Prevalent vertebral fracture	Yes vs no	3.88 (2.07 to 7.27)	<0.0001
Fall	Yes vs no	8.58 (3.09 to 23.8)	<0.0001

BMD, bone mineral density.