Fig 2. Efficacy of ISTp-DP versus IPTp-SP on the primary outcomes of adverse live birth outcome and maternal or placental plasmodium infection at delivery (any measure).

Adjusted RR values obtained from multivariate log binomial regression models with missing values imputed and adjusting for gravidity, study site, and seven other prespecified covariates: malaria status at enrollment (binary), season during pregnancy (terciles based on average ranked rainfall during the last 6 mo of pregnancy), maternal height (terciles), hemoglobin status at enrollment (terciles), maternal years of schooling (terciles), socioeconomic status (terciles of socioeconomic index calculated using principal component analysis), and gestational age at first antenatal visit (binary based on median). There were no differences in effect size for paucigravidae versus multigravidae (p-value for interaction term: p = 0.271 for adverse live birth outcome and p = 0.454 for plasmodium infection at delivery).

IPTp-SP, intermittent preventive therapy in pregnancy with sulfadoxine-pyrimethamine; ISTp-DP, intermittent screening and treatment in pregnancy with dihydroartemisinin-piperaquine; LBW, low birthweight; RR, relative risk; SGA, small for gestational age.