Table 5. Bivariate negative binomial generalized linear model (NB-GLM) for intensity of hookworm infection among schoolchildren in Kwale, Kenya.
| Parameter | Estimate | Std. Error | Z value | Pr(> | Z |) | |
|---|---|---|---|---|---|
| Age | 8–18 years | 0.2381 | 0.1573 | 1.514 | 0.13 |
| Sex | Boys | -0.3534 | 0.5373 | -0.658 | 0.511 |
| S. haematobium infection | Positive | 0.9868 | 0.5658 | 1.744 | 0.0811 |
| SES* (*Reference = Least poor) |
Less poor | 2.01375 | 0.82227 | 2.449 | 0.0143 |
| Poor | 0.99243 | 0.81971 | 1.211 | 0.226 | |
| Very poor | 1.96882 | 0.84231 | 2.337 | 0.0194 | |
| Most poor | -0.06043 | 0.82783 | -0.073 | 0.9418 | |
| Last deworming | Over a year ago | 1.194 | 0.6134 | 1.95 | 0.04951 |
| Bathing in river/dam** (**Reference = Never) |
1–2 times a week | -2.223 | 1.2178 | -1.825 | 0.0679 |
| 5–6 times a week | -2.521 | 1.4977 | -1.683 | 0.0923 | |
| Daily | -0.8499 | 0.6012 | -1.414 | 0.1575 | |
| Religion | Muslim | 1.9862 | 0.6431 | 2.088 | 0.002 |
| Latrine | Present | 1.1808 | 0.5578 | 2.117 | 0.0343 |
| Drinking water source*** (***Reference = River) |
Well | 1.891 | 0.8027 | 2.356 | 0.0185 |
| Spring | -0.149 | 2.9244 | -0.051 | 0.9594 | |
| Tap | 0.614 | 0.8028 | 0.765 | 0.4444 | |
| Shoes wearing habit | Never | -0.4209 | 0.5375 | -0.783 | 0.434 |
| Distance to the river | Far | -2.1489 | 0.5153 | -4.17 | 3.04E-05 |