Table 3.

Results from a subgroup-based Cox regression analysis of the undisplaced fractures ^a

	Hazard ratio	95% CI	p-value
Low total hip BMD	6	0.5–74	0.1
Implant positioning	22	2–292	0.02
Sex	6	0.3–112	0.2
Age	0.3	0.1–2.4	0.3
Alcohol	0.5	0.1–3.8	0.5
Walking disability	0.1	0.1–1.0	0.05

^a n = 37 due to lack of one or more covariates.