To date, 100 women (52 vanguard) have completed questionnaires. Participants were 30.8 ± 4.3 years old; this is similar to the average maternal age (29.7 years) at delivery for the general Manitoba population. Post-secondary training was higher amongst CHILD participants than the general Manitoba population (81.1% vs. 38.8% college/undergraduate and 14.9% vs. 5.1% graduate degrees, respectively). Using Statistics Canada's income adequacy quartiles, the majority of CHILD participants were from upper middle class families. Notably, vanguard participants were more likely to own their own homes than cohort participants (93.8% vs. 71.4%; p < 0.015). Vanguard participants were also more likely to rate their social standing as higher as compared to cohort participants (96.6% vs. 38.5%; p < 0.001). In Manitoba, 1 in 5 women smoke. In CHILD, 8.8% of women currently smoke.