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Table 2 Malaria odds ratios associated with distance to wetness categories

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

   Controlling for person-time and year Controlling for person-time, year, and elevation
Wetness category Wetness values OR 95% CI OR 95% CI
   for a 100 m increase in distance for a 100 m increase in distance
Kipsamoite
1 (driest) 2.9–4.8 1.084 1.046 1.123 1.065 1.005 1.129
2 4.8–6.7 1.078 0.879 1.322 0.812 0.610 1.079
3 6.7–8.6 0.204 0.060 0.695 0.295 0.089 0.974
4 8.6–10.5 1.031 0.810 1.312 1.253 0.938 1.674
5 10.5–12.4 1.033 0.868 1.230 1.103 0.923 1.318
6 12.4–14.3 0.940 0.818 1.080 1.066 0.915 1.243
7 14.3–16.2 0.894 0.817 0.978 0.993 0.874 1.128
8 16.2–18.1 0.882 0.815 0.953 0.924 0.841 1.016
9 18.1–20.0 0.870 0.812 0.934 0.892 0.827 0.963
10 (wettest) 20.0–21.8 0.920 0.885 0.957 0.932 0.894 0.972
Kapsisiywa
1 (driest) 4.4–6.3 0.987 0.902 1.080 0.971 0.883 1.067
2 6.3–8.2 0.749 0.515 1.089 0.684 0.465 1.006
3 8.2–10.1 1.070 0.752 1.524 1.106 0.776 1.575
4 10.1–12.0 1.003 0.895 1.125 1.027 0.905 1.165
5 12.0–13.9 0.972 0.896 1.055 0.982 0.899 1.072
6 13.9–15.8 0.932 0.858 1.011 0.936 0.860 1.019
7 15.8–17.7 0.929 0.862 1.002 0.933 0.863 1.009
8 17.7–19.6 0.924 0.856 0.997 0.927 0.853 1.007
9 19.6–21.5 0.917 0.854 0.984 0.909 0.838 0.987
10 (wettest) 21.5–23.4 0.903 0.857 0.953 0.894 0.841 0.950
  1. Odds ratios for the presence of any household malaria in 2003–2004 associated with 100 m increases in distance between houses and the nearest 10 m2 grid-cell in each of ten wetness categories.