Figure 1. Mean Difference in Length / Height, Weight, and Body Mass Index (BMI) Between Offspring Conceived via Assisted Reproductive Technology (ART) and Those Who Were Naturally Conceived (NC).

Cohort-specific results were adjusted for maternal age, parity, BMI (calculated as weight in kilograms divided by height in meters squared), smoking, education, ethnicity or country of birth, plus offspring sex and age. I² represents the percentage of total variability that is due to between-cohort heterogeneity. Cohort-specific results are provided in eFigures 2-4 in the Supplement.