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Table 1 The prevalence and relative risks of trypanosome infections in cattle of different age categories and sex

From: Heterogeneity in the prevalence and intensity of bovine trypanosomiasis in the districts of Amuru and Nwoya, Northern Uganda

Age / sex N n n (%) Odds ratio (95 % CI) P-value
HCT PCR
Calves (<12 months) 133 09 09 (7) 1.0 reference
Young females (12–48 months) 136 23 48 (35) 5.1 (2.1–9.8) < 0.001
Young males (12–48 months) 136 27 49 (36) 5.2 (2.4–10.2) < 0.001
Cows (> 48 months) 168 48 71 (42) 6.1 (3.8–9.1) 0.001
Bulls and oxen (> 48 months) 243 71 161 (66) 10.0 (5.6–17.9) < 0.001
Total 816 178 (22)IR-HCT 338 (41)IR-PCR   
  1. N number of animals examined, n number of positive animals, (%) percentage of animals infected, IR-HCT the overall infection rate by HCT, IR-PCR the overall infection rate by PCR. Calves (< 12 months) were used as a reference category