Figure 1. Predicted probability of GDM_IADPSG as a function of PRS (continuous), stratified by BMI groups in BiB.

Lines (with 95% confidence limits) represent predicted probabilities of GDM stratified by BMI groups (upper, middle, and lower terciles). Models are adjusted for maternal age. BiB, Born in Bradford; BMI, body mass index; GDM, gestational diabetes mellitus; IADPSG, International Association of Diabetes and Pregnancy Study Groups; PRS, polygenic risk score; SD, standard deviation.