How many subjects are needed in a longitudinal birth cohort study?

J Golding, CD Steer

Research output: Contribution to journalArticle (Academic Journal)peer-review

11 Citations (Scopus)

Abstract

One of the first decisions that needs to be taken when planning a birth cohort concerns the size of the study. This in turn will depend on the research questions to be answered and thence whether environmental exposures and outcomes are measured on a continuum or as dichotomous variables. Here we describe ways in which different birth cohorts have addressed this issue and explore the advantages of smaller detailed studies over larger less-detailed studies.
Translated title of the contributionHow many subjects are needed in a longitudinal birth cohort study?
Original languageEnglish
Pages (from-to)31 - 38
Number of pages8
JournalPaediatric and Perinatal Epidemiology
Volume23 (S1)
DOIs
Publication statusPublished - Jul 2009

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