Associations (estimates) between prenatal PFAS 1 concentrations (columns) and obesity risk (defined as percentile for age and sex; reference is percentile) in late adolescence by levels (10th, 25th, 50th, 75th, and 90th percentiles) of prenatal PFAS 2 concentration (rows) when all other PFAS are fixed at their 50th percentile estimated using Bayesian kernel machine regression (). Percentile values for -transformed PFAS levels are provided in Table S2. Estimates are provided in Excel Table S1. Participants were from the Project Viva prebirth cohort. Pregnant women were enrolled between April 1999 and July 2002, and the late adolescence visit was conducted between July 2017 and September 2021. Models were adjusted for maternal age at enrollment, race and ethnicity, prepregnancy BMI, educational level, marital status, parity, pregnancy smoking status. Note: BMI, body mass index; EtFOSAA, 2-(-ethyl-perfluorooctane sulfonamido) acetate; MeFOSAA, 2-(-methyl-perfluorooctane sulfonamido) acetate; PFAS, per- and polyfluoroalkyl substances; PFHxS, perfluorohexane sulfonate; PFNA, perfluorononanoate; PFOA, perfluorooctanoate; PFOS, perfluorooctane sulfonate.