Forest plot for aggregated data meta-analysis of crude and adjusted hazard ratios for the association between different antimalarial exposure categories and stillbirth.

<p>HRs account for pregnancy week under observation through left truncation and treat exposure as a time-dependent variable. <i>I</i>² values are for IPD from Africa only: ^a26.0%; ^b27.4%; ^c26.1%; ^d28.3%; ^e20.5%; ^f27.0%. Crude HRs are adjusted for clustering by site. aHRs for IPD from Africa account for site, woman’s age, and gravidity. aHRs for the SMRU account for smoking, year of first consultation, gravidity, and non-malaria febrile morbidity in the first trimester for the comparison with the unexposed group. aHR, adjusted hazard ratio; HR, hazard ratio; IPD, individual patient data; SMRU, Shoklo Malaria Research Unit.