Table 3.
Coefficients and standard errors from a multinomial logistic regression examining effect of pig contact on disease syndrome accounting for variation in spatiotemporal and demographic factors.
| Respiratory | CNSI | df | LR χ2 | p value | |
|---|---|---|---|---|---|
| Site: | – | – | 8 | 757.7 | < 0.001* |
| Dong Thap | − 0.73 ± 0.05 | − 1.18 ± 0.02 | – | – | – |
| Hue | 0.96 ± 0.04 | 1.79 ± 0.03 | – | – | – |
| Khanh Hoa | − 0.45 ± 0.05 | − 0.66 ± 0.03 | – | – | – |
| Ba Vi/Hanoi | 1.12 ± 0.05 | 0.86 ± 0.03 | – | – | – |
| Distance from hospital (per 10 km) | − 0.05 ± 0.01 | 0.06 ± 0.01 | 2 | 75.5 | < 0.001* |
| Gender | 0.06 ± 0.05 | 0.60 ± 0.08 | 2 | 53.8 | < 0.001* |
| Age | 0.39 ± 0.06 | 2.18 ± 0.04 | 2 | 522.2 | < 0.001* |
| Year of admission | − 0.28 ± 0.001 | − 0.57 ± 0.001 | 2 | 195.3 | < 0.001* |
| Water source | − 0.07 ± 0.05 | − 0.65 ± 0.05 | 2 | 45.4 | < 0.001* |
| Pig contact | − 1.36 ± 0.04 | − 0.41 ± 0.04 | 2 | 291.0 | < 0.001* |
| Cattle contact | 0.16 ± 0.04 | 0.07 ± 0.03 | 2 | 2.8 | 0.25 |
| Chicken contact | − 0.14 ± 0.06 | − 0.14 ± 0.03 | 2 | 4.3 | 0.12 |
| Dog contact | − 0.30 ± 0.05 | − 0.26 ± 0.03 | 2 | 19.1 | < 0.001* |
| Cat contact | 0.20 ± 0.03 | − 0.16 ± 0.02 | 2 | 9.0 | 0.011* |
Results of likelihood ratio tests (LRTs) comparing models including and excluding each variable are displayed. Coefficients and standard errors are given in the multinomial logit scale. *represents a significant p value (< 0.05). Total n = 8898
Values displayed for site, gender, age, water source, and syndrome are given relative to Dak Lak, females, children, natural sources, and enteric syndrome, respectively. The first year of admission was 2012