Table 1

Rates of malaria by elevation and proximity to predicted wetness



Household elevation





Above median
Below median

Distance to wettest locations
Above median
25.7 (21.2–30.2)
RR = Reference
49.8 (37.3–62.3)
RR = 1.93

Below median
70.6 (57.0–84.3)
RR = 2.75
97.4 (88.6–106.2)
RR = 3.74

Malaria rates per 1000 person-years (95% confidence intervals) and relative rates (RR) during 2003–2004 for houses located higher and lower than the median elevation for their community and closer or farther than the median from locations of highest predicted wetness.

Cohen et al. Malaria Journal 2008 7:40   doi:10.1186/1475-2875-7-40