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Table 2 Multivariate analysis of risk factors for cattle tuberculin reactors using General Linear models (GLM) with herd as random effect

From: Prevalence and risk factors for infection of bovine tuberculosis in indigenous cattle in the Serengeti ecosystem, Tanzania

Risk factors Proportional% (No/total) OR 95% CI ( p-value)
Sex     
Female 2.07 (15/724) 1.00* - -
Male 3.17 (12/379) 1.53 0.714; 3.29 0.274
Age     
<2 years 1.30 (3/231) 1.00* - -
2–4 years 3.6 (11/304) 11.06 1.444; 84.785 0.005
Over 4 years 2.3 (13/568) 5.71 0.717; 45.436  
Location     
Serengeti 2.64 (15/569) 1.00* - -
Ngorongoro 2.94 (11/374) 0.93 0.417; 2.077 0.007
Bunda 0.63 (1/160) 0.21 0.028; 1.634  
Animal tested     
1–20 3.5 (6/170) 1.00* - -
21–40 1.9 (5/265) 0.55 0.151; 2.006  
≥ 41 2.4 (16/668) 0.88 0.308; 2.534 0.015
Household size     
1–5 1.30 (2/154) 1.00* - -
6–10 2.4 (6/248) 1.97 0.599; 6.478  
> =11 2.7 (19/701) 0.74 0.255; 2.163 0.007
  1. OR: Odds ration; CI: Confidence interval; p: p-value (Likelihood ratio test); *Reference level.