Table 1.
Age-Specific Mortality Ratios (males/females) for Intact and Neutered Dogs From the VetComapss and VMDB
| Age group (years) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Data set | Group | 1–2 | 2–4 | 4–7 | 7–10 | 10–15 | 15–20 | 20+ |
| VetCompass | Intact | 1.07 | 1.00 | 0.97 | 0.93 | 1.01 | 0.99 | 1.00 |
| Neutered | 1.82 | 1.15 | 1.30 | 1.56 | 1.02 | 1.01 | 1.00 | |
| VMDB | Intact | 0.76 | 0.83 | 0.94 | 1.04 | 1.04 | 1.00 | N/A |
| Neutered | 1.28 | 1.24 | 1.16 | 1.12 | 1.02 | 1.00 | N/A | |
Note: Mortality rates were calculated by determining the fraction of dogs that died at any time point compared to all dogs alive at that time point. Ratios of males to females were then calculated and displayed below. VMDB = Veterinary Medical Database.