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Table 3 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 tumour and locomotor 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 Category2
  Tumour Locomotor
Variable MRR(99.9% CI)3 Estimate (SE) MRR(99.9% CI) Estimate (SE)
Intercept - -7.5762 (0.1424) - -6.4992 (0.0957)
Gender (female) 0.8(0.6–1.1) -0.2434 (0.0904) 0.9(0.7–1.1) -0.1327 (0.0586)
Age (in years) 1.5(1.4–1.6) 0.4006 (0.0209) 1.2(1.2–1.3) 0.2186 (0.0183)
Breed     
CKC spaniel4a 0.5(0.4–0.8) -0.6247 (0.1251) 1.0 -
German shepherd (GS) 1.7(1.5–2.0) 0.5548 (0.0450) 8.3(6.6–10) 2.1168 (0.0707)
Drever 1.05 - 1.05 -
Dachshund 0.4(0.3–0.5) -0.9778 (0.1009) 1.7(1.3–2.1) 0.5012 (0.0739)
Labrador retriever 1.05 - 4.2(3.0–5.9) 1.4349 (0.1056)
Springer spaniel4b 1.05 - 0.5(0.3–0.9) -0.6732 (0.1785)
Mongrel 1.05 - 0.5(0.3–0.8) -0.6625 (0.1465)
Golden retriever 1.05 - 3.3(2.2–4.9) 1.2020 (0.1194)
Poodle (min/toy) 0.3(0.2–0.6) -1.0843 (0.1570) 0.5(0.3–0.9) -0.7120 (0.1874)
Min dachshund4c 0.3(0.1–0.5) -1.3715 (0.2301) 0.7(0.3–1.4) -0.4041 (0.2218)
Irish wolfhound 8.9(5.7–14) 2.1823 (0.1324) 6.7(3.6–12) 1.9023 (0.1874)
St Bernard 3.9(2.2–6.6) 1.349 (0.1652) 5.2(2.7–9.9) 1.6491 (0.1941)
Great Dane 4.6(2.7–7.8) 1.5173 (0.1632) 6.1(3.6–11) 1.8111 (0.1644)
Bernese mtn dog4d 17(9.4–31) 2.8382 (0.1804) 7.1(5.4–9.4) 1.9645 (0.0826)
Newfoundland 2.2(1.5–3.2) 0.7664 (0.119) 15 (8.6–26) 2.7003 (0.1657)
Dobermann 4.0(2.9–5.5) 1.3857 (0.0990) 5.0(3.4–7.5) 1.6117 (0.1205)
Leonberger 5.5(4.1–7.6) 1.7128 (0.0947) 3.9(2.4–6.2) 1.3615 (0.1423)
Boxer 4.2(3.3–5.3) 1.4336 (0.0687) 2.2(1.4–3.4) 0.7977 (0.1305)
Greyhound 1.05 - 4.8(2.8–8.2) 1.5584 (0.1642)
Pyrenees 2.7(1.3–5.5) 0.9926 (0.2138) 5.7(3.0–11) 1.7342 (0.1977)
Interactions     
Age-gender 1.1(1.0–1.1) 0.0551 (0.0132) 1.0(0.9–1.0) -0.0407 (0.0116)
Age- Newfoundl. NA6 NA 0.8 (0.8–0.9) -0.1707 (0.0355)
Age-GS NA NA 0.9(0.9–0.9) -0.1102 (0.0143)
Age-Labrador retr. NA NA 0.9(0.8–1.0) -0.1176 (0.0212)
Age- Golden retr. NA NA 0.8(0.7–0.8) -0.2674 (0.0278)
Age- Min dachshund4c NA NA 1.2(1.1–1.4) 0.2221 (0.0409)
Gender-BMD4d 0.7(0.5–1.0) -0.3941 (0.1153) NA NA
  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 (BMD)
  5. 5 – Breed is included in baseline category for this model
  6. 6 – Not applicable