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. 2007 Oct;71(4):292-9.

Bone tumors in a population of 400 000 insured Swedish dogs up to 10 y of age: incidence and survival

Agneta Egenvall  1 , Ane Nødtvedt, Henrik von Euler
Affiliations

Bone tumors in a population of 400 000 insured Swedish dogs up to 10 y of age: incidence and survival

Agneta Egenvall et al. Can J Vet Res. 2007 Oct.

Abstract
in English, French

The objectives of this study were to describe the incidence of, survival until, and survival after the diagnosis of canine bone tumors by breed, sex, age, and geographic location of residence. Dogs under 10 y old and insured by a Swedish insurance company between 1995 and 2002 were studied. In total, 764 dogs had claims for bone tumors, and the incidence rate was 5.5 cases per 10 000 dog-years at risk (DYAR). At ages 6, 8, and 10 y, the proportions of dogs with bone tumors were 0.13%, 0.30%, and 0.64%. The top 3 breeds at risk were Irish wolfhound, St. Bernard, and leonberger (incidence rates 99, 78, and 53 cases per 10 000 DYAR, respectively). Median survival time after diagnosis was 56 d in the 419 dogs that survived > or = 1 d. With a Cox regression model controlling for breed and age, females were shown to be at decreased risk of bone tumors, with a hazard ratio of 0.71 (99% confidence interval 0.58 to 0.87).

Les objectifs de la présente étude étaient de décrire l’incidence de tumeurs osseuses canines et la survie jusqu’à, ainsi que la survie après, le diagnostic selon l’âge, la race, le sexe et la distribution géographique. L’étude a été menée chez des chiens âgés de moins de 10 ans et assurés par une compagnie d’assurance suédoise entre 1995 et 2002. Au total, des réclamations pour des tumeurs osseuses ont été faites pour 764 chiens, et le taux d’incidence était de 5,5 cas par 10 000 années-chiens à risque (DYAR). À 6, 8 et 10 ans, les proportions de chiens avec des tumeurs osseuses étaient de 0,13 %, 0,30 % et 0,64 %. Les trois races les plus à risque étaient le lévrier irlandais, le St-Bernard et le leonberger (taux d’incidence respectifs de 99, 78 et 53 cas par 10 000 DYAR). La médiane du temps de survie après le diagnostic était de 56 j chez les 419 chiens qui ont survécu ≥ 1 j. Avec un modèle de régression de Cox contrôlant pour la race et l’âge, on a démontré que les femelles avaient un risque diminué de tumeurs osseuses, avec un ratio de chance de 0,71 (intervalle de confiance 99 %, 0,58 à 0,87).

(Traduit par Docteur Serge Messier)

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Figures

Figure 1
Figure 1
Age-specific incidence rates (number of cases per 10 000 dog-years at risk), with 95% confidence intervals, for bone tumors in a Swedish population of dogs with insurance for veterinary care and life insurance during 1995 to 2002. Data source: Agria Insurance, Stockholm, Sweden.
See this image and copyright information in PMC

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