Table 4.
Multivariable logistic regression analysis of predictors of T. gondii infection in sheep of study districts
| Risk factors category | Adjusted OR (95% CI) | P-value | |
|---|---|---|---|
| Altitude |
Low land |
1.00 |
- |
| Mid land |
4.54 (2.76, 7.49) |
<0.001 |
|
| High land |
4.11 (2.65, 6.36) |
<0.001 |
|
| Sex |
Male |
1.00 |
- |
| Female |
1.60 (1.04, 2.43) |
0.033 |
|
| Age |
Young |
1.00 |
- |
| Adult |
2.93 (1.97, 4.35) |
<0.001 |
|
| Flock Size |
Large (n ≥ 50) |
1.00 |
- |
| Small (n < 50) |
3.34 (1.26, 8.86) |
0.016 |
|
| Management type |
Extensive |
1.00 |
- |
| SI |
2.88 (0.96, 8.69) |
0.060 |
|
| Source of water |
Mixedb |
1.00 |
- |
| Stagnantc |
2.34 (0.69, 7.94) |
0.174 |
|
| River |
4.18 (1.54, 11.35) |
0.005 |
|
| Tap |
4.07 (1.07, 15.42) |
0.039 |
|
| Presence of cats |
No |
1.00 |
- |
| Yes |
1.11 (0.77, 1.60) |
0.578 |
|
| Management type*source of water |
SI* Stagnantc |
1.23 (0.30, 5.09) |
0.772 |
| SI*river |
3.64 (1.16, 11.43) |
0.027 |
|
| SI*tap | 2.12 (0.33, 13.42) | 0.425 | |
b mixed = river, well, lake, pond; Stagnant c = pond, well, lake; * indicate interaction
Factors associated with T. gondii seropositivity in study districts with their frequency (N), % Prevalence, adjusted odds ratio (aOR) and corresponding 95% confidence interval (95% CI) in the final multivariable logistic regression model (using 1130 sheep sera from 3 districts and 227 flocks); Hosmer-Lemshow χ2 = 4.03, P =0.779.