Fig. 1: Maternal body weight.
From: Obesity in pregnant women: a 20-year analysis of the German experience

Longitudinal observation of maternal body weight (mean and standard deviation [s]) at the first obstetrical visit (proof of pregnancy) in Schleswig-Holstein of the periods 1995–7 and 2004–17 (a: Primiparae, b: Biparae, c: Multiparae).