Table 2.

Hazard ratio for death and relative time to death comparing light intraoperative sedation to deep intraoperative sedation

Patient groups (n)	Hazard ratioa	95% CI	P value	Relative time to deatha, b	95% CI	P value
1-year follow-up
All patients (114)	0.61	0.28–1.33	0.21	2.68	0.70–10.23	0.15
Charlson > 4 (84)	0.43	0.19–0.97	0.04	4.47	1.16–17.31	0.03
Charlson >6 (40)	0.33	0.12–0.94	0.04	8.9	1.42–56.0	0.02
Nottingham Hip Fracture     Score >4 (97)	0.44	0.21–0.96	0.04	4.37	1.16–16.41	0.03
Nottingham Hip Fracture     Score >6 (50)	0.32	0.11–0.90	0.03	10.90	1.41–84.0	0.02
Overall follow-up
All patients (114)	N/Ac	N/Ac	N/Ac	1.40	0.47–4.2	0.54
Charlson > 4 (84)	N/Ac	N/Ac	N/Ac	2.97	0.94–9.35	0.06
Charlson >6 (40)	N/Ac	N/Ac	N/Ac	6.95	1.43–33.72	0.02
Nottingham Hip Fracture     Score >4 (97)	N/Ac	N/Ac	N/Ac	2.69	0.93–7.77	0.07
Nottingham Hip Fracture     Score >6 (50)	N/Ac	N/Ac	N/Ac	5.02	1.16–21.64	0.03

CI = confidence interval.

^aModels were adjusted for baseline living independently

^bThe relative time to death was calculated by using parametric models in which the failure times followed a log-normal distribution.

^cCox proportional hazards assumption of constant proportional hazards over time were not fully supported for overall follow-up in all models; therefore a hazard ratio using the Cox model is not presented.