Table 2.
Stepwise logistic regression model for risk of nonvaccination against rabies in owned dogs (n=1,489) in KZN, South Africa, September 2009–January 2011
| Variable | b | SE | P-value | OR | 95% CI | |
|---|---|---|---|---|---|---|
| Intercept | −0.9957 | 0.092 | <0.0001 | |||
|
| ||||||
| Age (years) | ||||||
| <1 | 1.1562 | 0.1300 | <0.0001 | 5.605 | 3.607–8.709 | |
| 1−2 | 0.2595 | 0.1116 | 0.0201 | 0.408 | 0.288–0.578 | |
| 3 | −0.3645 | 0.1344 | 0.0067 | 0.219 | 0.146–0.327 | |
| 4 | −0.4838 | 0.1716 | 0.0048 | 0.194 | 0.12–0.314 | |
| >5 | −0.5674 | 0.1530 | 0.0002 | 0.178 | 0.115–0.277 | |
| Area | ||||||
| Ixopo | −0.4005 | 0.1353 | 0.0031 | 0.288 | 0.159–0.523 | |
| Pongola | 0.2647 | 0.1395 | 0.0577 | 0.561 | 0.309–1.017 | |
| St Chad’s | −0.4645 | 0.1437 | 0.0012 | 0.27 | 0.147–0.497 | |
| Umlazi | 0.8435 | 0.2404 | 0.0005 | 2.675 | 1.378–5.120 | |
| Esikhawini | −0.1096 | 0.2790 | 0.6944 | 0.386 | 0.168–0.886 | |
| Wembezi | −0.1336 | 0.1796 | 0.4569 | 0.376 | 0.195–0.725 | |
| Household | ||||||
| Low | 0.4316 | 0.0992 | <0.0001 | 2.15 | 1.508–3.065 | |
| Medium | −0.0979 | 0.0929 | 0.2921 | 1.266 | 0.906–1.769 | |
| High | −0.3337 | 0.1041 | 0.0014 | 0.790 | 0.565–1.104 | |
| Dog | ||||||
| Low | 0.1297 | 0.1076 | 0.2280 | 1.656 | 1.165–2.355 | |
| Medium | 0.2451 | 0.0900 | 0.0065 | 1.859 | 1.392–2.484 | |
| High | −0.3337 | 0.0927 | <0.0001 | 0.538 | 0.403–0.719 | |
| Husbandry | ||||||
| Low | 0.2078 | 0.0900 | 0.0209 | 1.73 | 1.281–2.335 | |
| Medium | 0.1329 | 0.1007 | 0.1892 | 1.604 | 1.145–2.247 | |
| High | −0.3401 | 0.0933 | 0.0003 | 0.624 | 0.445–0.874 | |
Note: Effects model pivots around 0.
Abbreviations: CI, confidence interval; KZN, KwaZulu-Natal; OR, odds ratio; SE, standard error.