Table 5. Cox-regression proportional hazards model, modeling the survivability of different breeds of dogs with ‘Rate Total’ as a covariate.
| β | Wald | df | p-value | Exp(β) | Exp (β) 95% CI | ||
|---|---|---|---|---|---|---|---|
| Lower | Upper | ||||||
| Covariate Rate Total | 0.162 | 64.58 | 1 | <0.001 | 1.175 | 1.130 | 1.223 |
| Breed Dogue de Bordeaux | −12.105 | 44.271 | 1 | <0.001 | 6−6 | 1.565−7 | 1.960−4 |
| Whippet | −2.419 | 39.009 | 1 | <0.001 | 0.089 | 0.042 | 0.190 |
| Rhodesian Ridgeback | −1.941 | 24.433 | 1 | <0.001 | 0.144 | 0.067 | 0.310 |
| Staffordshire Bull Terrier | −1.806 | 40.143 | 1 | <0.001 | 0.164 | 0.094 | 0.287 |
| Tibetan Terrier | 0.483 | 13.633 | 1 | <0.001 | 1.621 | 1.255 | 2.096 |
| Bull Mastiff | 0.795 | 20.258 | 1 | <0.001 | 2.214 | 1.566 | 3.129 |
| Shetland Sheepdog | 1.546 | 61.335 | 1 | <0.001 | 4.691 | 3.186 | 6.907 |
| Pug | 1.599 | 411.244 | 1 | <0.001 | 4.950 | 4.241 | 5.777 |
| Bull Terrier | 1.629 | 102.357 | 1 | <0.001 | 5.101 | 3.720 | 6.995 |
| Poodle Miniature | 1.666 | 38.626 | 1 | <0.001 | 5.292 | 3.129 | 8.950 |
| Poodle Toy | 1.798 | 41.540 | 1 | <0.001 | 6.037 | 3.494 | 10.429 |
| Labrador | 1.874 | 57.486 | 1 | <0.001 | 6.514 | 4.013 | 10.575 |
| West Highland Terrier | 1.983 | 68.114 | 1 | <0.001 | 7.265 | 4.536 | 11.634 |
| Irish Setter | 2.103 | 78.054 | 1 | <0.001 | 8.187 | 5.135 | 13.053 |
| Basset Hound | 2.107 | 127.733 | 1 | <0.001 | 8.225 | 5.707 | 11.853 |
| Cavalier King Chrles Spaniel | 2.205 | 204.593 | 1 | <0.001 | 9.071 | 6.705 | 12.270 |
| German Shorted-Hair Pointer | 2.210 | 65.239 | 1 | <0.001 | 9.119 | 5.333 | 15.592 |
| Chihuahua | 2.286 | 182.833 | 1 | <0.001 | 9.832 | 7.059 | 13.693 |
| Dalmatian | 2.329 | 99.287 | 1 | <0.001 | 10.270 | 6.495 | 16.239 |
| Springer Spaniel | 2.423 | 85.607 | 1 | <0.001 | 11.278 | 6.750 | 18.841 |
| Collie (Rough) | 2.431 | 82.005 | 1 | <0.001 | 11.376 | 6.721 | 19.255 |
| Hungarian Vizsla | 2.444 | 82.177 | 1 | <0.001 | 11.519 | 6.791 | 19.539 |
| Cairn Terrier | 2.474 | 63.367 | 1 | <0.001 | 11.865 | 6.453 | 21.815 |
| Border Collie | 2.512 | 73.124 | 1 | <0.001 | 12.334 | 6.935 | 21.938 |
| Shih Tzu | 2.548 | 83.657 | 1 | <0.001 | 12.779 | 7.402 | 22.059 |
| Poodle Standard | 2.642 | 68.117 | 1 | <0.001 | 14.036 | 7.496 | 26.285 |
| Bichon Frise | 2.706 | 92.274 | 1 | <0.001 | 14.963 | 8.615 | 25.987 |
| German Shepard | 2.746 | 156.512 | 1 | <0.001 | 15.582 | 10.134 | 23.959 |
| Shar Pei | 2.813 | 349.604 | 1 | <0.001 | 16.662 | 12.407 | 22.377 |
| Alaskan Malamute | 3.012 | 132.368 | 1 | <0.001 | 20.334 | 12.172 | 33.969 |
| Cocker Spaniel | 3.030 | 96.623 | 1 | <0.001 | 20.698 | 11.312 | 37.871 |
| Scottish Terrier | 3.037 | 77.295 | 1 | <0.001 | 20.845 | 10.591 | 41.024 |
| Lhasa Apso | 3.346 | 89.761 | 1 | <0.001 | 28.381 | 14.205 | 56.705 |
| Beagle | 3.356 | 112.241 | 1 | <0.001 | 28.661 | 15.406 | 53.320 |
| Golden Retriever | 3.488 | 83.652 | 1 | <0.001 | 32.730 | 15.499 | 69.118 |
| Miniature Schnauzer | 3.747 | 87.736 | 1 | <0.001 | 42.381 | 19.351 | 92.823 |
| Great Dane | 3.912 | 235.326 | 1 | <0.001 | 50.010 | 30.337 | 82.440 |
| Doberman | 3.935 | 162.363 | 1 | <0.001 | 51.146 | 27.923 | 93.682 |
| Boxer | 3.983 | 130.334 | 1 | <0.001 | 53.691 | 27.096 | 106.387 |
| Weimaraner | 4.088 | 99.726 | 1 | <0.001 | 59.640 | 26.734 | 133.048 |
| Rottweiler | 4.247 | 151.288 | 1 | <0.001 | 69.930 | 35.540 | 137.596 |
| Bulldog | 4.446 | 201.831 | 1 | <0.001 | 85.273 | 46.178 | 157.466 |
Notes.
‘Rate Total’ is a calculated rate based on the Genetic Illness Severity Index for Dogs. The model is highly (−2 Log Likelihood 335,993, χ2 = 5,013 with 43 df, p < 0.001). The variable ‘Breed’ is significant (Wald 4,314, with 42 df, p < 0.01), as it is the covariate ‘Total Ratio’ (Wald 64.58, with 1 df, p < 0.001). Yorkshire Terrier is the baseline breed.