Table 4.
Logistic regression results for location category associated with anaemia (clinical sign of haemonchosis, measured by FAMACHA score) in the wet and dry seasons. Village (pairwise results shown), fence and location are separate models, selected by Akaike information criterion (AIC) as described in the text. The dependent variable is coded as non‐anaemic = 0, anaemic = 1, n = number of goats. Intercept and covariates goat age, sex, girth and treatment not shown, but are included in all models (see text). For ease of interpretation, villages separated from the park by a fence are indicated in italics, while the eastern village (Gweta) is shown in bold text
| Dependent variable (n) | Category | Reference | B | SE | Wald z | Odds ratio (95% CI) |
|---|---|---|---|---|---|---|
| Dry season anaemia (964) | Khumaga | Gweta | −0.902 | 0.263 | −3.43 | 0.406 (0.239–0.672)** |
| Khumaga | Moreomaoto | −1.215 | 0.282 | −4.31 | 0.297 (0.169–0.511)*** | |
| Khumaga | Phuduhudu | −1.096 | 0.262 | −4.18 | 0.334 (0.197–0.552)*** | |
| Moreomaoto | Gweta | 0.313 | 0.228 | 1.37 | 1.367 (0.873–2.137) | |
| Phuduhudu | Gweta | 0.194 | 0.208 | 0.93 | 1.214 (0.808–1.827) | |
| Phuduhudu | Moreomaoto | −0.119 | 0.227 | −0.524 | 0.888 (0.569–1.388) | |
| Fence | No fence | −0.336 | 0.166 | −2.026 | 0.714 (0.515–0.987)* | |
| Rainy season anaemia (678) | Khumaga | Gweta | 1.749 | 0.440 | 3.972 | 5.751 (2.453–13.872)*** |
| Khumaga | Moreomaoto | −0.413 | 0.307 | −1.348 | 0.661 (0.361–1.203) | |
| Khumaga | Phuduhudu | 0.753 | 0.378 | 1.993 | 2.123 (1.019–4.499)* | |
| Moreomaoto | Gweta | 2.163 | 0.369 | 5.857 | 8.694 (4.289–18.360)*** | |
| Phuduhudu | Gweta | 0.996 | 0.380 | 2.624 | 2.708 (1.299–5.805)** | |
| Phuduhudu | Moreomaoto | −1.166 | 0.314 | −3.710 | 0.312 (0.166–0.572)** | |
| Fence | No Fence | 1.499 | 0.279 | 5.368 | 4.477 (2.598–7.784)*** | |
| East | West | −1.549 | 0.339 | −4.571 | 0.212 (0.106–0.404)*** |
Significance indicated by *p < .05, **p < .01, ***p < .0001.