Variable | Category | Case No. (%) | Non-case No. (%) | Odds ratio | 95% CI* | Category P-value | Variable P-value |
---|---|---|---|---|---|---|---|
Purebred status | Crossbred | 100 (16.26) | 110,124 (24.96) | Base |  |  | <  0.001 |
Purebred | 515 (83.74) | 331,113 (75.04) | 1.72 | 1.38–2.12 | <  0.001 |  | |
Breed | Crossbreed | 100 (16.23) | 110,124 (24.87) | 1.00 |  |  | <  0.001 |
Labrador Retriever | 189 (30.68) | 30,894 (6.98) | 6.74 | 5.29–8.59 | <  0.001 |  | |
Rottweiler | 23 (3.73) | 4999 (1.13) | 5.07 | 3.22–7.98 | <  0.001 |  | |
Golden Retriever | 21 (3.41) | 5318 (1.20) | 4.35 | 2.71–6.97 | <  0.001 |  | |
German Shepherd Dog | 43 (6.98) | 11,848 (2.68) | 4.00 | 2.79–5.72 | <  0.001 |  | |
English Springer Spaniel | 22 (3.57) | 10,709 (2.42) | 2.26 | 1.43–3.59 | 0.001 |  | |
Other purebreds | 100 (16.23) | 82,952 (18.74) | 1.33 | 1.01–1.75 | 0.045 |  | |
Lhasa Apso | 8 (1.30) | 6773 (1.53) | 1.30 | 0.63–2.67 | 0.474 |  | |
Cavalier King Charles Spaniel | 11 (1.79) | 9924 (2.24) | 1.22 | 0.65–2.28 | 0.53 |  | |
Border Collie | 13 (2.11) | 11,834 (2.67) | 1.21 | 0.68–2.16 | 0.519 |  | |
Staffordshire Bull Terrier | 32 (5.19) | 31,897 (7.20) | 1.10 | 0.74–1.65 | 0.624 |  | |
Cocker Spaniel | 14 (2.27) | 15,458 (3.49) | 1.00 | 0.57–1.75 | 0.993 |  | |
Yorkshire Terrier | 11 (1.79) | 15,296 (3.45) | 0.79 | 0.42–1.48 | 0.463 |  | |
Unavailable | 1 (0.16) | 1502 (0.34) | 0.73 | 0.10–5.26 | 0.758 |  | |
Boxer | 4 (0.65) | 6075 (1.37) | 0.73 | 0.27–1.97 | 0.529 |  | |
Pug | 2 (0.32) | 5318 (1.20) | 0.41 | 0.10–1.68 | 0.217 |  | |
Jack Russell Terrier | 10 (1.62) | 27,407 (6.19) | 0.40 | 0.21–0.77 | 0.006 |  | |
West Highland White Terrier | 4 (0.65) | 11,838 (2.67) | 0.37 | 0.14–1.01 | 0.053 |  | |
Shih-tzu | 5 (0.81) | 14,882 (3.36) | 0.37 | 0.15–0.91 | 0.03 |  | |
Husky | 1 (0.16) | 4070 (0.92) | 0.27 | 0.04–1.94 | 0.193 |  | |
Bichon | 1 (0.16) | 6533 (1.48) | 0.17 | 0.02–1.21 | 0.076 |  | |
Chihuahua | 1 (0.16) | 11,709 (2.64) | 0.09 | 0.01–0.67 | 0.019 |  | |
Border Terrier | 0 (0.00) | 5379 (1.21) | ~ | ~ | ~ | Â | |
Kennel Club Breed Group | Breed not Kennel Club recognised | 121 (19.67) | 147,800 (33.50) | Base |  |  | <  0.001 |
Toy | 31 (5.04) | 56,669 (12.84) | 0.67 | 0.45–0.99 | 0.045 |  | |
Utility | 33 (5.37) | 44,511 (10.09) | 0.91 | 0.62–1.33 | 0.614 |  | |
Terrier | 49 (7.97) | 57,913 (13.13) | 1.03 | 0.74–1.44 | 0.846 |  | |
Gundog | 256 (41.63) | 69,021 (15.64) | 4.53 | 3.65–5.63 | <  0.001 |  | |
Hound | 14 (2.28) | 15,556 (3.53) | 1.10 | 0.63–1.91 | 0.737 |  | |
Pastoral | 65 (10.57) | 28,414 (6.44) | 2.79 | 2.07–3.78 | <  0.001 |  | |
Working | 46 (7.48) | 21,353 (4.84) | 2.63 | 1.87–3.70 | <  0.001 |  | |
Adult (>  18 months) bodyweight (kg) | <  10.0 | 36 (5.84) | 98,298 (22.20) | Base |  |  | <  0.001 |
10.0 - < 20.0 | 89 (14.45) | 89,741 (20.27) | 2.71 | 1.84–3.99 | <  0.001 |  | |
20.0 - <  30.0 | 115 (18.67) | 65,740 (14.85) | 4.78 | 3.28–6.95 | <  0.001 |  | |
30.0 - < 40.0 | 187 (30.36) | 43,560 (9.84) | 11.72 | 8.20–16.75 | <  0.001 |  | |
≥ 40.0 | 147 (23.86) | 23,153 (5.23) | 17.34 | 12.04–24.97 | <  0.001 |  | |
Unavailable | 42 (6.82) | 122,247 (27.61) | 0.94 | 0.60–1.46 | 0.779 |  | |
Bodyweight relative to breed mean | Lower | 200 (32.47) | 179,134 (40.46) | Base |  |  | <  0.001 |
Equal/Higher | 374 (60.71) | 140,861 (31.82) | 2.38 | 2.00–2.82 | <  0.001 |  | |
Unavailable | 42 (6.82) | 122,744 (27.72) | 0.31 | 0.22–0.43 | <  0.001 |  | |
Age (years) | <  3.0 years | 108 (17.53) | 173,638 (39.22) | Base |  |  | <  0.001 |
3.0 - < 6.0 years | 103 (16.72) | 112,371 (25.38) | 1.47 | 1.12–1.93 | 0.005 |  | |
6.0 - < 9.0 years | 142 (23.05) | 74,082 (16.73) | 3.08 | 2.40–3.96 | <  0.001 |  | |
9.0 - < 12.0 years | 149 (24.19) | 44,891 (10.14) | 5.34 | 4.16–6.84 | <  0.001 |  | |
≥ 12.0 years | 112 (18.18) | 31,666 (7.15) | 5.69 | 4.36–7.41 | <  0.001 |  | |
Unavailable | 2 (0.32) | 6091 (1.38) | 0.53 | 0.13–2.14 | 0.371 |  | |
Sex | Female | 244 (39.61) | 213,489 (48.22) | Base |  |  | <  0.001 |
Male | 372 (60.39) | 226,969 (51.26) | 1.43 | 1.22–1.69 | <  0.001 |  | |
Unavailable | 0 (0.00) | 2281 (0.52) | ~ | ~ | ~ | Â | |
Neuter | Entire | 122 (19.81) | 174,753 (39.47) | Base |  |  | <  0.001 |
Neutered | 360 (58.44) | 198,298 (44.79) | 2.60 | 2.12–3.19 | <  0.001 |  | |
Unavailable | 134 (21.75) | 69,688 (15.74) | 2.75 | 2.15–3.52 | <  0.001 |  | |
Insurance | Non-insured | 27,320 (6.17) | 41 (6.66) | Base |  |  | <  0.001 |
Insured | 54,136 (12.23) | 182 (29.55) | 2.24 | 1.60–3.14 | <  0.001 |  | |
Unavailable | 361,283 (81.60) | 393 (63.80) | 0.72 | 0.53–1.00 | 0.050 |  |