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Table 4 Multivariable estimates, standard errors (SE's) and mortality rate ratios (MRR), with 99.9% confidence intervals (99.9% CI), developed using Poisson regression on diagnostic categories trauma, heart and neurological in dogs insured at Agria1 from 1995 to 2000.

From: Mortality in over 350,000 Insured Swedish Dogs from 1995–2000: II. Breed-Specific Age and Survival Patterns and Relative Risk for Causes of Death

  Diagnostic category 2
  Trauma Heart Neurological
Variable MRR (99N.9% CI)3 Estimate (SE) MRR (99.9% CI) Estimate (SE) MRR (99.9% CI) Estimate (SE)
Intercept - 4.8732 (0.0464) - -7.4284 (0.0929) - -6.1979 (0.0805)
Gender (female) 0.8(0.8–0.9) -0.1961 (0.0277) 0.5(0.5–0.6) -0.6040 (0.0426) 0.7(0.6–0.8) -0.3586 (0.0469)
Age (in years) 0.9(0.9–0.9) -0.069 (0.0053) 1.4(1.4–1.5) 0.3552 (0.0111) 1.1(1.1–1.1) 0.0945 (0.0091)
Breed       
CKC spaniel4a 0.5(0.3–0.8) -0.7135 (0.1314) 3.0(1.7–5.5) 1.1074 (0.1793) 1.05 -
German shepherd (GS) 0.7(0.6–0.9) -0.3225 (0.0637) 2.1(1.0–4.4) 0.7300 (0.2277) 0.5(0.2–0.9) -0.7643 (0.1977)
Drever 4.4(3.8–5.1) 1.4848 (0.0447) 1.05 - 1.05 -
Dachshund 2.3(2.0–2.7) 0.842 (0.0493) 0.1(0.01–0.4) -2.5337 (0.5188) 0.3(0.2–0.6) -1.1793 (0.1943)
Labrador retriever 0.5(0.3–0.6) -0.7764 (0.0941) 0.5(0.3–0.8) -0.7959 (0.1677) 0.6(0.4–1.0) -0.4432 (0.1276)
Springer spaniel4b 0.5(0.3–0.8) -0.7061 (0.1303) 1.05 - 1.05 -
Mongrel 1.05 - 0.5(0.3–1.0) -0.7037 (0.2027) 1.05 -
Golden retriever 0.3(0.2–0.4) -1.1771 (0.1046) 0.5(0.3–0.8) -0.7061 (0.1401) 1.05 -
Poodle (min/toy) 1.05 - 0.4(0.2–0.9) -0.9602 (0.2693) 1.05 -
Min dachshund4c 1.7(1.4–2.1) 0.5237 (0.0654) 0.3(0.1–1.0) -1.1053 (0.3352) 0.3(0.1–0.7) -1.1682 (0.2597)
Irish wolfhound 1.05 - 29 (19–44) 3.3645 (0.1294) 1.05 -
St Bernard 1.05 - 12 (6.5–20) 2.4438 (0.1746) 5.1(2.4–11) 1.6204 (0.2309)
Great Dane 1.05 - 21 (13–32) 3.0210 (0.1371) 3.5(1.6–7.8) 1.2455 (0.2442)
Bernese mtn dog4d 1.05 - 1.05 - 1.05 -
Newfoundland 1.05 - 10 (7.3–14) 2.3268 (0.1044) 1.05 -
Dobermann 1.05 - 6.4(4.0–10) 1.8546 (0.1439) 1.05 -
Leonberger 1.05 - 8.6(5.6–13) 2.1565 (0.1344) 1.05 -
Boxer 0.4(0.2–0.8) -0.9084 (0.2243) 2.7(1.7–4.5) 1.0094 (0.1527) 1.1(0.4–3.3) 0.0995 (0.3296)
Greyhound 2.8(1.8–4.5) 1.0461 (0.1411) 3.3(1.3–8.2) 1.1839 (0.2794) 1.05 -
Pyrenees 1.05 - 1.05 - 1.05 -
Interactions       
Age-CKC spaniel NA6 NA 1.3(1.2–1.4) 0.2667 (0.0253)   NA
Age-GS NA NA 0.9(0.8–1.0) -0.1500 (0.0409) 1.2(1.1–1.3) 0.1812 (0.0341)
Age-Dachshund NA NA 1.5(1.2–1.9) 0.4194 (0.0678)   NA
Age-Boxer NA NA NA NA 1.3(1.1–1.5) 0.2237 (0.0523)
  1. 1 – Agria Insurance, PO 70306, SE-107 23 Stockholm, Sweden
  2. 2 – Separate models were run for each heading
  3. 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. 4 – Breed names: 4a – Cavalier King Charles spaniel, 4b – English springer spaniel, 4c – miniature dachshund, 4d – Bernese mountain dog
  5. 5 – Breed is included in baseline category for this model
  6. 6 – Not applicable