Hip Fracture Mortality: Is It Affected by Anesthesia Techniques?

Table 3

Summary of Cox regression analyses.

Variable	Significance	Odds ratio
Age	0.008*	1.030
Sex	0.287	0.820
ASA status	0.033*	1.432
Delay in surgery	0.021*	1.020
Anesthesia type	0.003*
GA versus CPNB (Cox 1)	0.005*	0.537
GA versus NB (Cox 1)	0.012*	0.508
GA + NB versus CPNB (Cox 2)	0.029*	0.627**
GA + CPNB versus NB (Cox 3)	0.068	0.619

* 𝑃<0.05.
**Odds ratio <1 is associated with decreased hazard of the event (in this case “CPNB choice is associated with decreased mortality”).