Table 3.
Descriptive and univariable logistic regression results for risk factors for diagnosis of lymphoma in cats attending UK primary‐care practices in 2016. Only incident cases aged 2 years and older were included here
| Variable | Category | Case, n (%) | Control, n (%) | Odds ratio | 95% CI | Variable P‐value |
|---|---|---|---|---|---|---|
| Purebred Status | Crossbred | 153 (85.5) | 686 (85.4) | Base | 0.539 | |
| Purebred | 26 (14.4) | 100 (12.5) | 1.2 | 0.7 to 1.9 | ||
| Not recorded | 1 (0.1) | 17 (2.1) | ||||
| Breed | Domestic | 151 (83.8) | 665 (82.8) | Base | 0.116 | |
| British Blue | 3 (1.6) | 2 (0.2) | 6.6 | 1.1 to 39.9 | ||
| Persian | 3 (1.6) | 9 (1.1) | 1.5 | 0.4 to 5.9 | ||
| Siamese | 4 (2.2) | 9 (1.1) | 2.0 | 0.6 to 6.4 | ||
| Cross breed | 2 (1.1) | 21 (2.6) | 0.4 | 0.1 to 1.8 | ||
| Other purebreds | 16 (8.8) | 80 (10.0) | 0.9 | 0.5 to 1.5 | ||
| Not recorded | 1 (0.5) | 17 (2.1) | ||||
| Age (years) | 2.0 to 4.9 | 14 (7.8) | 254 (31.6) | Base | < 0.001 | |
| 5.0 to 7.9 | 26 (14.5) | 186 (23.2) | 2.5 | 1.3 to 5.0 | ||
| 8.0 to 10.9 | 47 (26.3) | 146 (18.2) | 5.8 | 3.1 to 11.0 | ||
| ≥11.0 | 92 (51.4) | 217 (27.0) | 7.7 | 4.3 to 13.9 | ||
| Sex | Female | 74 (41.1) | 435 (54.3) | Base | 0.001 | |
| Male | 106 (58.9) | 366 (45.7) | 1.7 | 1.2 to 2.4 | ||
| Insurance status | Insured | 75 (41.7) | 108 (13.4) | 4.5 | 3.2 to 6.6 | < 0.001 |
| No evidence/Non‐insured | 105 (58.3) | 695 (86.6) | Base | |||
| Vaccination status 1 | Not vaccinated | 74 (41.1) | 276 (34.4) | Base | 0.088 | |
| Vaccinated | 106 (58.9) | 527 (65.6) | 0.8 | 0.5 to 1.0 | ||
| Vaccination status 2 | Not vaccinated | 74 (41.1) | 276 (34.4) | Base | 0.258 | |
| Vaccinated Unknown | 26 (14.4) | 111 (13.8) | 1.4 | 0.9 to 2.0 | ||
| Vaccinated: no FeLV | 3 (1.7) | 11 (1.4) | 1.2 | 0.8 to 2.0 | ||
| Vaccinated: FeLV | 77 (42.8) | 405 (50.4) | 1.4 | 0.4 to 5.3 | ||
| Fungicide (kg usage per census ward) | “No exposure” (0) | 99 (55.0) | 437 (54.4) | Base | 0.512 | |
| 1 to 150 | 16 (8.9) | 97 (12.1) | 0.7 | 0.4 to 1.3 | ||
| ≥150 | 27 (15.0) | 127 (15.8) | 0.9 | 0.6 to 1.5 | ||
| Not available | 38 (21.1) | 142 (17.7) | 1.1 | 0.8 to 1.8 | ||
| Herbicide (kg usage per census ward) | “No exposure” (0) | 96 (53.3) | 418 (52.1) | Base | 0.548 | |
| 1 to 230 | 21 (11.7) | 108 (13.4) | 0.8 | 0.5 to 1.4 | ||
| ≥230 | 25 (13.9) | 135 (16.8) | 0.8 | 0.5 to 1.3 | ||
| Not available | 38 (21.1) | 142 (17.7) | 1.2 | 0.8 to 1.8 | ||
| Pesticide | Low‐low | 112 (62.2) | 514 (64.0) | Base | 0.502 | |
| High‐high | 22 (12.2) | 115 (14.3) | 0.9 | 0.5 to 1.4 | ||
| High‐ low | 5 (2.8) | 12 (1.5) | 1.9 | 0.6 to 5.5 | ||
| Low‐ high | 3 (1.7) | 20 (2.5) | 0.7 | 0.2 to 2.4 | ||
| Not available | 38 (21.1) | 142 (17.7) | 1.2 | 0.8 to 1.9 | ||
| Vet Groups | Vet Group 1 | 82 (45.6) | 206 (25.7) | Base | < 0.001 | |
| Vet Group 2 | 6 (3.3) | 5 (0.6) | 3.0 | 0.9 to 10.2 | ||
| Vet Group 3 | 65 (36.1) | 485 (60.4) | 0.3 | 0.2 to 0.5 | ||
| Vet Group 4 | 27 (15.0) | 107 (13.3) | 0.6 | 0.4 to 1.0 |