2.1. Socio-Demographic Data Collection
obesity
OBESITY
The socio-demographic questions include both quantitative and free-text items relating to the women’s 1st trimester BMI, ethnic group, employment, marital, smoking, and breastfeeding status, alcohol intake, and dietary preference. Women’s 1st trimester BMI were collected from electronic health records and used to categorise their obesity class using the WHO criteria: class 1 BMI 30.0–34.9 kg/m