Fig. 1

Total participants following study exclusion and follow-up loss at each studied sweep. Legend/note: Potential explanatory variables at 9 months include infant sex, low attachment mechanisms (breastfeeding status, unplanned pregnancy, infant prematurity, maternal age at birth, multiple births), maternal depression, social inequalities (socioeconomic circumstance by maternal education, household income by UK quintiles, single-parent status) and poor adolescent mental health measured at 14 years. Asterisks (*) indicate loss to follow-up, which was accounted for by attrition weightings