Risk markers for poor developmental attainment in young children: results from a longitudinal national survey.


OBJECTIVE To evaluate social and environmental determinants of poor developmental attainment among preschool children by means of longitudinal data from a population-based sample of Canadian children. DESIGN Secondary analysis of data from cycles 1 (1994-1995) and 2 (1996-1997) of the National Longitudinal Survey of Children and Youth using a cohort… (More)


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