Table 4. Results of the zero-inflated negative binomial model in a multivariable analysis.
| Variables | Negative binomial model | Zero-inflated model | ||||
|---|---|---|---|---|---|---|
| Incidence Rate ratio* | 95% CI | P-value | Odds ratio* | 95% CI | P-value | |
| Population density–per km2 | 1.00 | 1.00–1.00 | 0.4153 | 1.00 | 1.00–1.00 | 0.1123 |
| Sanitation and hygiene benchmark† | 1.01 | 0.98–1.04 | 0.5662 | —‡ | — | — |
| Improved water sources—% | 0.99 | 0.97–1.02 | 0.6401 | —‡ | — | — |
| Distance from center of the district to nearest hospital—km | 0.99 | 0.96–1.02 | 0.5354 | —‡ | — | — |
| Distance from the center of the district to the nearest lake or river—km | 0.98 | 0.97–0.99 | 0.0008 | —‡ | — | — |
| Distance from the center of the district to nearest border of DRC or Kenya—km | 0.99 | 0.98–1.00 | 0.0209 | 0.98 | 0.97–0.99 | 0.0142 |
| Weighted incidence rate of the 1st order neighbor districts—per 100,000† | 1.02 | 1.01–1.03 | 0.0033 | 1.03 | 1.01–1.05 | 0.0002 |
| Average annual rainfall during 2011–2015 (mm) | —‡ | — | — | 1.00 | 1.00–1.01 | 0.0338 |
*Obtained by exponentiating the estimates obtained from the model. The estimates cited herein are adjusted for all other variables in the model
†Calculation of the benchmark score and weighted incidence rate of the 1st order neighbor districts have been described in the text
‡Variable not included in the model due to insignificant association with the outcome (p-value≥0.20) in the bivariate analysis