Table 1.
Univariate Cox proportional hazards regression for all‐cause mortality (n = 21)
| Variable | Hazard Ratio (95% Confidence Interval) | P Value |
|---|---|---|
| Sex (female) | 0.84 (0.32–2.22) | 0.725 |
| Neuter status (Yes) | 1.22 (0.51–2.94) | 0.649 |
| Age | 1.03 (0.90–1.16) | 0.699 |
| Weight | 1.00 (0.98–1.02) | 0.943 |
| Diagnosis (DCM) | 0.78 (0.34–1.84) | 0.569 |
| Study site (UPenn) | 2.35 (0.64–8.61) | 0.196 |
| CHF at diagnosis (Yes) | 2.44 (0.81–7.41) | 0.113 |
| HR variables | ||
| Min HRa | 1.30 (1.14–1.49) | <0.001 |
| Max HRa | 1.25 (1.08–1.44) | 0.003 |
| Mean HRa | 1.35 (1.17–1.55) | <0.001 |
meanHR, mean heart rate (24‐hour average); minHR, minimum HR (1‐minute average); maxHR, maximum HR (1‐minute average); DCM, dilated cardiomyopathy; CHF, congestive heart failure; UPenn, University of Pennsylvania.
a
Hazard ratio for every 10 bpm difference.