Fig. 2

Mother’s and father’s age at childbirth and probabilities of being enrolled in the academic track. Figures show the average linear predictions (with 95% confidence intervals), from linear probability models with robust standard errors. Model 1 estimates the gross effect of age at motherhood and fatherhood. Model 2 controls for age at childbirth of the other parent. Model 3 controls for both parents’ social class and education. Model 4 includes additional controls for region of residence, trimester-year of interview, birth order, family size, birth abroad, age and sex