Effect of deep tube well use on childhood diarrhoea in Bangladesh
V Escamilla, B Wagner, M Yunus, PK Streatfield, A van Geen & M Emch
Volume 89, Number 7, July 2011, 521-527
Table 1. Incidence rate ratios (IRR)a for predictors of diarrhoea in children aged under 5 years derived using a random effects negative binomial model,b Matlab, Bangladesh, 2005–2006
| Predictor | IRR | 95% CI | P |
|---|---|---|---|
| Deep tube well use | 0.541 | 0.308–0.949 | 0.032 |
| No. of children aged < 5 years in the household | 1.988 | 1.434–2.755 | 0.0001 |
| Maternal educational level | 0.932 | 0.858–1.012 | 0.094 |
| Household socioeconomic status | 0.983 | 0.840–1.151 | 0.835 |
| Latrine densityc | 0.977 | 0.882–1.082 | 0.650 |
| Population density in the vicinity of the householdd | 0.999 | 0.987–1.012 | 0.911 |
| Study yeare | 1.371 | 0.914–2.058 | 0.128 |
CI, confidence interval.
a An IRR of 1 indicates that the independent variable has no effect on the risk of diarrhoea, while an IRR greater than 1 indicates an increased risk and an IRR below 1, a decreased risk.
b The model considered 927 observations from a total of 543 households.
c Number of latrines within 30 metres of a household.
d Number of people living within 30 metres of a household.
e The study years were 2005 and 2006.