Research Article
The Demographics of Canine Hip Dysplasia in the United States and Canada
Table 2
Odds ratios of CHD by AKC/FCI groups, sex, season of birth, and latitude.
| (a) |
| | By AKC group | | | OR | 95% CI | value |
| | Sex | | | | | Female | 1.056 | (1.069, 1.044) | <10−6 | | Male | 1.0 R | — | — | | Season of birth | | | | | Autumn | 1.025 | (1.042, 1.008) | <10−6 | | Winter | 1.131 | (1.149, 1.112) | 0.081 | | Spring | 1.146 | (1.165, 1.128) | <10−6 | | Summer | 1.0 R | — | — | | Latitude | | | | | <30°N | 2.116 | (2.203, 2.034) | <10−6 | | 30–39°N | 1.428 | (1.477, 1.381) | <10−6 | | 40–49°N | 1.552 | (1.605, 1.501) | <10−6 | | 50°N | 1.0 R | — | — | | AKC group | | | | | Herding | 1.535 | (1.602, 1.470) | <10−6 | | Toy | 1.675 | (1.788, 1.570) | <10−6 | | Working | 1.882 | (1.965, 1.804) | <10−6 | | Sporting | 1.504 | (1.569, 1.442) | <10−6 | | Nonsporting | 1.348 | (1.415, 1.284) | <10−6 | | Terrier | 1.236 | (1.311, 1.164) | <10−6 | | Hound | 1.0 R | — | — |
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| (b) |
| | By FCI group | | | OR | 95% CI | value |
| | Sex | | | | | Female | 1.053 | (1.065, 1.040) | <10−6 | | Male | 1.0 R | — | — | | Season of birth | | | | | Autumn | 1.021 | (1.038, 1.004) | 0.016 | | Winter | 1.124 | (1.142, 1.105) | <10−6 | | Spring | 1.143 | (1.161, 1.125) | <10−6 | | Summer | 1.0 R | — | — | | Latitude | | | | | <30°N | 2.047 | (2.13, 1.967) | <10−6 | | 30–39°N | 1.410 | (1.458, 1.363) | <10−6 | | 40–49°N | 1.546 | (1.599, 1.496) | <10−6 | | 50°N | 1.0 R | — | — | | FCI group | | | | | Sheep and cattle | 3.229 | (3.653, 2.854) | <10−6 | | Pinscher schnauzer, molossoid, and Swiss Mtn/cattle dog | 4.618 | (5.224, 4.082) | <10−6 | | Terrier | 3.163 | (3.605, 2.774) | <10−6 | | Spitz and primitive | 2.059 | (2.334, 1.816) | <10−6 | | Scent hounds | 2.096 | (2.393, 1.836) | <10−6 | | Pointing dogs | 2.184 | (2.473, 1.927) | <10−6 | | Retrievers, flushers, and water dogs | 3.386 | (3.830, 2.994) | <10−6 | | Companion and toy dogs | 2.824 | (3.204, 2.489) | <10−6 | | Sighthounds | 1.0 R | — | — |
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