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Table 4 Causes of death classified by organ system in our data

From: Lifespan of companion dogs seen in three independent primary care veterinary clinics in the United States

Organ System All Dogs % Purebreds % Mixed Breeds % Males % Females % Intact % Gonadectomized % Small % Medium % Large % Giant %
cardiovascular 108 11.37 74 11.78 30 10.56 50 10.50 58 12.31 23 13.53 85 10.94 29 16.48 20 13.42 19 7.76 3 7.32
dermatologic 20 2.11 13 2.07 6 2.11 8 1.68 12 2.55 5 2.94 15 1.93 3 1.70 5 3.36 4 1.63 0 0.00
endocrine 28 2.95 20 3.18 7 2.46 15 3.15 13 2.76 3 1.76 25 3.22 7 3.98 5 3.36 6 2.45 0 0.00
gastrointestinal 90 9.47 64 10.19 22 7.75 48 10.08 42 8.92 21 12.35 69 8.88 14 7.95 15 10.07 28 11.43 5 12.20
hematopoietic 126 13.26 70 11.15 51 17.96 69 14.50 56 11.89 13 7.65 112 14.41 10 5.68 15 10.07 39 15.92 4 9.76
hepatic 57 6.00 40 6.37 13 4.58 31 6.51 26 5.52 5 2.94 52 6.69 16 9.09 8 5.37 13 5.31 0 0.00
musculoskeletal 142 14.95 86 13.69 54 19.01 66 13.87 74 15.71 25 14.71 115 14.80 8 4.55 12 8.05 55 22.45 11 26.83
neurologic 200 21.05 140 22.29 51 17.96 99 20.80 101 21.44 41 24.12 159 20.46 41 23.30 33 22.15 50 20.41 13 31.71
ophthalmologic 4 0.42 1 0.16 3 1.06 3 0.63 1 0.21 1 0.59 3 0.39 0 0.00 1 0.67 0 0.00 0 0.00
respiratory 92 9.68 59 9.39 26 9.15 48 10.08 44 9.34 18 10.59 74 9.52 23 13.07 16 10.74 17 6.94 3 7.32
urogenital 83 8.74 61 9.71 21 7.39 39 8.19 44 9.34 15 8.82 68 8.75 25 14.20 19 12.75 14 5.71 2 4.88
unclassified 585   366   193   293   287   102   478   118   92   130   23