Additional file 1 of Pregnancy-related complications and perinatal outcomes following progesterone supplementation before 20 weeks of pregnancy in spontaneously achieved singleton pregnancies: a systematic review and meta-analysis

Additional file 1: Figure S1. Risk of bias assessment for included studies. Figure S2. Funnel plots for the outcomes. Figure S3. Subgroup analyses of preeclampsia. Figure S4. Forest plot diagram of secondary maternal outcomes. Figure S5. Forest plot diagrams of perinatal outcomes. Figure S6. Subgroup analyses of low birth weight. Figure S7. Leave one out meta-analysis for (A) preeclampsia and (B) low birth weight.