Table 4.

Results of matched multivariable Cox regression on 1–59 month mortality, with shared frailty defined by matched strata

Covariate	Hazard ratio	95% Confidence interval	P value
Wealth
Lowest (ref)	1
Fourth	1.07	(0.88–1.31)	0.503
Middle	1.10	(0.89–1.35)	0.377
Second	1.12	(0.90–1.39)	0.311
Highest	0.68	(0.51–0.90)	0.007
Child age
1–5 months (ref)	1
6–11 months	0.96	(0.79–1.17)	0.664
12–23 months	0.42	(0.34–0.52)	< 0.001
24–35 months	0.29	(0.23–0.37)	< 0.001
36–47 months	0.17	(0.13–0.22)	< 0.001
48–59 months	0.10	(0.07–0.14)	< 0.001
Mother’s age
15–19 years (ref)	1
20–24 years	1.01	(0.71–1.44)	0.970
25–29 years	0.85	(0.58–1.24)	0.393
30–34 years	1.18	(0.79–1.78)	0.420
35–39 years	1.16	(0.73–1.85)	0.528
40–44 years	1.12	(0.65–1.95)	0.679
45–49 years	1.03	(0.52–2.03)	0.931
Parity	1.00	(0.95–1.06)	0.894
Diarrhea prevalence	1.65	(0.80–3.38)	0.173
DPT3 coverage (continuous)	0.58	(0.26–1.30)	0.184
PfPR2–10 (continuous)	1.00	(1.00–1.00)	0.467
Season (December–May)	0.90	(0.70–1.15)	0.395
Rainfall (lagged 2 months)	1.00	(1.00–1.00)	0.663
Minimum temperature (lagged 2 months)	0.99	(0.97–1.02)	0.502
HH ≥ 1 ITN	0.75	(0.62–0.90)	0.002

ITN = insecticide-treated net; PfPR_2–10 = Plasmodium falciparum prevalence rate in children age 2–10 years.