Table 3:
Multivariable logistic regression analysis of herd TB positivity with selected risk factors at ≥2 mm cut-off point.
Variables
Number of herds examined
Number of positive herds (%)
Crude odds ratio (95% CI)
Adjusted odds ratio (95% CI)
Districts
Chifra
18
10 (55.6)
1
1
Dubti
13
9 (69.2)
1.8 (0.40–8.07)
2.59 (0.49–13.73)
Afambo
6
2 (33.3)
0.40 (0.06–2.77)
2.70 (0.06–114.64)
Amibara
66
27 (40.9)
0.55 (0.19–1.58)
0.45 (0.14–1.39)
Herd size
≤25
52
19 (36.5)
1
1
34
19 (55.9)
2.2 (0.91–5.31)
3.23 (1.21–8.60)
>50
17
10 (58.8)
2.48 (0.81–7.59)
2.48 (0.76–8.09)
Production system
Agropastoral
8
3 (37.5)
1
1
Pastoral
95
45 (47.4)
1.5 (0.34–6.64)
6.88 (0.28–170.32)
CI: confidence interval.