Table 8.

The final exploratory Cox proportional hazards multivariable model without echocardiographic indices

Variable	Hazard ratio (HR)	95.0% confidence interval of the hazard ratio	P‐value
Pimobendan (versus Placebo)	0.623	0.454–0.855	.0033
Heart rate (beats per minute (bpm)) (HR for 10 bpm increment)	1.116	1.030–1.207	.0044
Systolic arterial blood pressure (mmHg) (HR for 10 mmHg increment)	0.895	0.825–0.970	.0072
Vertebral heart sum (0.1 unit increment)	1.027	1.008–1.047	.0047

HR, hazard ratio.