which study design best describes the following? a group of women whose children were born with low birth weight were compared with a group of women whose children were born within normal standard deviations of weight. They were asked about smoking habits before and during pregnancy. cohort case-control randomized control trial cross-sectional ecological
which study design best describes the following? a group of women whose children were born with low birth weight
were compared with a group of women whose children were born within normal standard deviations of weight. They were asked about smoking habits before and during pregnancy.
cohort
case-control
randomized control trial
cross-sectional
ecological
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