Table 3 Estimated unadjusted (left columns) and adjusted (right columns) risk ratios of LLIN use from log binomial regression modeling

Elevation quartile

 Quartile 1

REF

REF

 Quartile 2

1.06

1.03–1.10

< 0.001

1.07

1.03–1.11

0.02

 Quartile 3

1.01

0.97–1.04

0.73

0.97

0.93–1.02

0.23

 Quartile 4

0.86

0.83–0.89

< 0.001

0.87

0.81–0.94

< .001

Distance to clinic

 < 1 km

REF

REF

 1–2 km

0.99

0.96–1.01

0.22

1.03

0.98–1.08

0.23

 ≥ 2 km

0.86

0.83–0.89

< 0.001

0.73

0.64–0.82

< .001