Table 7.
The final explanatory Cox proportional hazards multivariable model
| Variable | Hazard ratio (HR) | 95.0% confidence interval of the hazard ratio | P‐value |
|---|---|---|---|
| Pimobendan (versus Placebo) | 0.539 | 0.389–0.747 | .0002 |
| Decreased appetite (yes) | 2.558 | 1.029–6.361 | .0433 |
| FS% (HR for 10% increment) | 1.318 | 1.051–1.644 | .0168 |
| LVIDDN (HR for 0.1 unit increment) | 1.214 | 1.116–1.319 | <.0001 |
| LA/Ao (HR for 0.1 unit increment) | 1.112 | 1.061–1.174 | <.0001 |
FS%, fractional shortening; HR, hazard ratio; LA/Ao, left atrial‐to‐aortic root ratio; LVIDDN, normalized left ventricular internal diameter in diastole.