Fig. 1
From: The association between gestational weight gain z-score and stillbirth: a case-control study
Study Exclusions by Case−Control Status. This figure depicts how many women were excluded at each successive step of sample selection. We excluded women with monochorionic/monoamniotic twin pregnancies, monochorionic/diamniotic twin pregnancies, triplet or higher−order gestations, missing or implausible GWG, and missing pre − pregnancy BMI or covariates