Table 3: Multivariable logistic regression analysis of herd TB positivity with selected risk factors at ≥2 mm cut-off point.

VariablesNumber of herds examinedNumber of positive herds (%)Crude odds ratio (95% CI)Adjusted odds ratio (95% CI)

Districts
 Chifra1810 (55.6)11
 Dubti139 (69.2)1.8 (0.40–8.07)2.59 (0.49–13.73)
 Afambo62 (33.3)0.40 (0.06–2.77)2.70 (0.06–114.64)
 Amibara6627 (40.9)0.55 (0.19–1.58)0.45 (0.14–1.39)
Herd size
 ≤255219 (36.5)11
3419 (55.9)2.2 (0.91–5.31)3.23 (1.21–8.60)
 >501710 (58.8)2.48 (0.81–7.59)2.48 (0.76–8.09)
Production system
 Agropastoral83 (37.5)11
 Pastoral9545 (47.4)1.5 (0.34–6.64)6.88 (0.28–170.32)

CI: confidence interval.