Table 3.

Univariate Cox Proportional Hazards Regression Analysis for Prediction of HF Rehospitalization

	P Value	HR (95% CI)
Continuous variables
Cannula coronal angle relative to horizontal line, °	.032*	1.046 (1.004–1.090)
Pump depth, mm	.009*	1.030 (1.007–1.054)
Cannula sagittal angle relative to vertebra, °	.33	1.016 (0.984–1.050)
Pump area, mm2	.66	1.000 (0.999–1.002)
Dichotomous variables
Cannula coronal angle >65°	.031*	10.33 (1.237–86.26)
Pump depth >35 mm	.34	32.96 (0.025–18254)

HF, heart failure; other abbreviations as in Table 2.

^*P < .05 by Cox proportional hazards regression analysis.