Table 5. Factors associated with Coxiella burnetii seropositivity obtained by multivariate analysis for all students and stratified by ever lived on a farm.
| All | Ever lived on a farm | ||
| OR (95% CI) | Yes (OR (95% CI)) | No (OR (95% CI)) | |
| Study direction | |||
| Farm animal health | 3.27 (2.14–5.02) | 4.86 (1.54–15.29) | 3.32 (2.06–5.35) |
| Other direction | 1.00 | 1.00 | 1.00 |
| Study phase | |||
| Phase 3 (Year 6) | 2.31 (1.22–4.39) | 0.43 (0.07–2.66) | 3.16 (1.55–6.46) |
| Phase 2 (Year 3–5) | 1.83 (1.07–3.10) | 1.34 (0.46–3.94) | 2.03 (1.09–3.79) |
| Phase 1 (Year 1–2) | 1.00 | 1.00 | 1.00 |
| Zoonotic disease during VMa | |||
| Yes | 1.74 (1.07–2.82) | 7.23 (1.74–30.09) | 1.34 (0.78–2.34) |
| No | 1.00 | 1.00 | 1.00 |
| Ever lived on ruminant farm | |||
| Yes | 2.73 (1.59–4.67) | - | - |
| No | 1.00 | - | - |
| Childhood municipality | |||
| Village | - | 0.53 (0.18–1.52) | 1.53 (0.89–2.62) |
| City | - | - | 2.18 (1.15–4.14) |
| Town | 1.00 | 1.00 | |
Note. Multivariate analysis for all students obtained with Forward and Backward logistic regression.
Stratified analysis obtained with Enter.
a
VM, veterinary medicine.