Table 3.

Cox regression analysis showing hazard ratio for short-term mortality after hip fracture

Variable	Survivals (%)	Deaths (%)	Unadjusted HR (CI)	p value	Adjusted HR * (CI)	p value	PARP (CI)
Hip fracture
No	207 (96.3)	8 (3.7)	1.0		1.0
Yes	190 (87.6)	27 (12.4)	3.4 (1.6-7.7)	0.002	2.4 (1.1-5.4)	0.037	44.7% (3.3-74.1)
Comorbidity
No	203 (94.9)	11 (5.1)	1.0		1.0
Yes	194 (89.0)	24 (11.0)	2.2 (1.1-4.5)	< 0.001	2.3 (1.1-4.7)	0.028	38.1% (4.5-65.0)
MMSE
> 19	258 (95.6)	12 (4.4)	1.0		1.0
≤ 19	139 (85.8)	23 (14.2)	3.3 (1.7-6.8)	< 0.001	2.3 (1.1-4.8)	0.022	34.3% (5.6-64.0)

HR: Hazard ratio; CI: 95% confidence intervals; PARP: population attributable risk proportion; MMSE: Mini Mental State Examination.

^*Multivariate adjustment for the significant risk factors in univariate analysis; only significant variables in this model were listed. Lower body mass index and lower T-score were only significant in univariate analyses.