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population based cohort study (part of the Longitudinal Study of Child Development in Quebec [LSCDQ]).
1549 of a random sample of 2103 preschool children from the LSCDQ were included in the nutrition study.
family food insufficiency (based on mother’s response of “regularly or every month,” “>1/month,” “only during certain months,” or “occasionally but not regularly” to the following question: Have you or a member of your family not eaten adequately because the family had run out of food or money to buy food?), income insufficiency, socioeconomic status, annual gross income, and family …
For correspondence: Dr L Dubois, University of Ottawa, Ottawa, Ontario, Canada.
Sources of funding: in part, Canadian Institute of Health Information, Population Health Initiative, and Canadian Institute of Health Research.