Topography-derived wetness indices are associated with household-level malaria risk in two communities in the western Kenyan highlands

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.

ISSN: 1475-2875