Table 5. Univariable logistic regression analysis of animal level risk factors for bTB (N = 1865).
| Risk factor | Category | TST positive (n)(%) |
Odds ratio (95% CI) |
P Value |
|---|---|---|---|---|
| Sex | Male | 16 (5.2) | 1.0 | 0.006 |
| Female | 194(12.4) | 2.4 (1.3–4.5) | - | |
| Age | ≤1 year | 11 (4.6) | 1.0 | <0.001 |
| 1–3 years | 43 (6.0) | 1.3 (0.6–2.7) | - | |
| 3–6 years | 116 (18.2) | 2.81.4–5.8) | ||
| > 6 years | 40 (14.7) | 3.3 (1.5–7.0) | ||
| Animal source | Farm | 111 (10.4) | 1.0 | |
| Bought | 99 (12.5) | 1.23 (0.92, 1.64) | 0.156 | |
| Breed | Local | 4 (2.9) | 1.0 | 0.59 |
| Friesian cross | 191 (12.5) | 2.2 (0.696.83) | ||
| Shahiwal/ Sindhi cross | 10 (7.4) | 1.9 (0.41–8.21) | ||
| Other cross (Jersey/Brahma) | 5 (8.5) | 1.8 (0.55–6.9) | ||
| Pregnancy status | No | 89 (7.7) | 1.0 | >0.001 |
| Yes | 121 (17.1) | 2.0 (1.4, 2.8) | ||
| Parity | 0–2 | 93 (7.5) | 1.0 | <0.001 |
| 2–5 | 104 (19.5) | 1.9 (1.4–2.8) | ||
| >5 | 13 (14.0) | 2.2 (1.0–4.4) | ||
| BCS | Poor (BCS: 0–3) | 5 (10.6) | 0.8 (0.3–2.4) | 0.84 |
| Good (BCS:>6) | 149 (12.0) | 1.1 (0.7–1.6) | ||
| Medium (BCS: 4–6) | 56 (9.7) | 1.0 |