Statistical analysis
malaria, parasitaemia
REGRESSION, EVENTS, MALARIA
Cleaned data were analysed using Stata version 14.0 (Stata-Corp, College Station, TX). Univariate and multiple logistic regression were used to assess the association between study intervention assignment (LPG, Biolite or control) and placental malaria. Likewise, logistic regression was used for the associations between maternal prenatal CO exposure and placental malaria. The analysis was adjusted for maternal age, wealth index, gravidity (first pregnancy), IPTp, use of ITNs, marital status, and malaria transmission season at delivery, factors known to be associated with placental malaria.Cox regression was used to determine the hazard of first or only episode of malaria parasitaemia between the control, Biolite and LPG arms. Kaplan–Meier plot for the probability of infants in the control, Biolite and LPG arms living without malaria was provided. An extended Cox model for multiple/recurrent events—Andersen-Gill model [