Table 2.
Multivariable estimates, standard errors (SE's) and mortality rate ratios (MRR), with 99.9% confidence intervals (99.9% CI), developed using Poisson regression for total and diagnostic mortality in dogs insured at Agria1 from 1995 to 2000.
| Total mortality2 | Diagnostic Mortality2 | |||
| MRR (99.9% CI)3 | Estimate (SE) | MRR(99.9% CI) | Estimate (SE) | |
| Intercept | - | -3.4983 (0.0313) | - | -4.2076 (0.0401) |
| Gender (female) | 0.7(0.6–0.7) | -0.4071 (0.0203) | 0.8(0.7–0.8) | -0.2536 (0.0254) |
| Age (in years) | 1.1(1.1–1.2) | 0.1245 (0.0057) | 1.2 (1.2–1.2) | 0.1690 (0.0070) |
| Breed | ||||
| CKC spaniel4a | 0.4(0.3–0.6) | -0.8627 (0.0815) | 0.5(0.4–0.7) | -0.6043 (0.0899) |
| German shepherd (GS) | 2.2(2.0–2.4) | 0.7852 (0.0300) | 2.7(2.2–3.3) | 0.9873 (0.0622) |
| Drever | 2.0(1.7–2.4) | 0.6924 (0.0497) | 2.5(2.1–3.0) | 0.9075 (0.0576) |
| Dachshund | 0.9(0.8–0.9) | -0.1521 (0.0257) | 1.2(0.9–1.5) | 0.1631 (0.0696) |
| Labrador retriever | 0.7 (0.7–0.8) | -0.3373 (0.0269) | 0.8(0.7–0.9) | -0.1983 (0.0301) |
| Springer spaniel4b | 0.9(0.8–1.0) | -0.1501 (0.0359) | 0.9(0.7–1.0) | -0.1519 (0.0430) |
| Mongrel | 2.1(1.8–2.4) | 0.7251 (0.0420) | 1.0(0.8–1.3) | 0.0459 (0.0691) |
| Golden retriever | 0.6(0.6–0.7) | -0.4576 (0.0254) | 0.7(0.6–0.7) | -0.3898 (0.0293) |
| Poodle (min/toy) | 0.7(0.6–0.8) | -0.4091 (0.0417) | 0.6(0.5–0.8) | -0.4365 (0.0504) |
| Min dachshund4c | 0.8(0.7–0.9) | -0.2271 (0.0383) | 1.1(0.8–1.4) | 0.0799 (0.0759) |
| Irish wolfhound (IW) | 2.0(1.2–3.2) | 0.6828 (0.1459) | 2.3(1.3–3.9) | 0.8173 (0.1671) |
| St Bernard | 3.4(2.7–4.1) | 1.2144 (0.0620) | 3.5(2.8–4.5) | 1.2637 (0.0723) |
| Great Dane | 2.9(2.1–4.0) | 1.0495 (0.1005) | 3.1(2.1–4.6) | 1.1266 (0.1192) |
| Bernese mtn dog4d | 1.3(1.0–1.7) | 0.2497 (0.0798) | 1.7(1.3–2.3) | 0.5231 (0.0875) |
| Newfoundland | 2.5(2.1–2.8) | 0.8987 (0.0405) | 2.8(2.4–3.2) | 1.0166 (0.0456) |
| Dobermann | 1.9(1.4–2.6) | 0.6482 (0.0945) | 1.6(1.0–2.3) | 0.4418 (0.1218) |
| Leonberger | 0.8(0.5–1.2) | -0.2580 (0.1249) | 0.8(0.5–1.4) | -0.1725 (0.1452) |
| Boxer | 0.8(0.6–1.1) | -0.2198 (0.1039) | 1.0(0.6–1.4) | -0.0452 (0.1166) |
| Greyhound | 2.4(1.9–2.9) | 0.8569 (0.0603) | 2.5(2.0–3.2) | 0.9203 (0.0705) |
| Pyrenees | 2.3(1.7–2.9) | 0.8114 (0.0806) | 2.2(1.6–3.1) | 0.8103 (0.0966) |
| Interactions | ||||
| Age-gender | 1.0(1.0–1.1) | 0.0386 (0.0037) | 1.0(1.0–1.0) | 0.0258 (0.0044) |
| Age- IW | 1.2(1.1–1.3) | 0.1838 (0.0251) | 1.2(1.1–1.3) | 0.1897 (0.0281) |
| Age- great Dane | 1.1(1.0–1.2) | 0.0789 (0.0201) | 1.1(1.0–1.2) | 0.0943 (0.0228) |
| Age- boxer | 1.1(1.1–1.2) | 0.1354 (0.0164) | 1.2(1.1–1.2) | 0.1402 (0.0181) |
| Age- dobermann | 1.1(1.0–1.1) | 0.0690 (0.0163) | 1.1(1.1–1.2) | 0.1227 (0.0197) |
| Age-leonberger | 1.3(1.2–1.4) | 0.2361 (0.0203) | 1.3(1.2–1.4) | 0.2449 (0.0230) |
| Age- BMD4d | 1.2(1.1–1.2) | 0.1565 (0.0140) | 1.2(1.1–1.2) | 0.1465 (0.0151) |
| Age-CKC spaniel4a | 1.2(1.2–1.3) | 0.2237 (0.0125) | 1.2(1.2–1.3) | 0.2111 (0.0137) |
| Age- GS | 1.0(0.9–1.0) | -0.0397 (0.0057) | 1.0(0.9–1.0) | -0.0370 (0.0069) |
| Age-drever | 0.9(0.9–1.0) | -0.0481 (0.0098) | 0.9(0.9–1.0) | -0.0805 (0.0113) |
| Age-mongrel | 0.9(0.9–0.9) | -0.1271 (0.0092) | 0.9(0.9–1.0) | -0.0601 (0.0135) |
| Age-dachshund | NA5 | NA | 1.0(0.9–1.0) | -0.0416 (0.0118) |
| Age-min dachshund4c | NA | NA | 0.9(0.9–1.0) | -0.0638 (0.0181) |
| Gender-GS | NA | NA | 0.9(0.8–1.0) | -0.1274 (0.0357) |
1 – Agria Insurance, PO 70306, SE-107 23 Stockholm, Sweden
2 – Separate models were run for each heading
3 – MRR ratio from Poisson regression = EXP(estimate), interpreted as risk for that variable (eg. breed) relative to the baseline (all breeds not in the model), adjusted for gender and age
4 – Breed names: 4a – Cavalier King Charles spaniel, 4b – English springer spaniel, 4c – miniature dachshund, 4d – Bernese mountain dog (BMD)
5 – Not applicable