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 contribution | How many subjects are needed in a longitudinal birth cohort study? |
|---|---|
| Original language | English |
| Pages (from-to) | 31 - 38 |
| Number of pages | 8 |
| Journal | Paediatric and Perinatal Epidemiology |
| Volume | 23 (S1) |
| DOIs | |
| Publication status | Published - Jul 2009 |