Abstract
Although birth cohort studies can stand on their own, there are a number of different types of sub-studies that can add value to the overall project. These can be summarised within four main categories: (A) more detailed observations of relatively small subgroups aimed at describing mechanisms and processes; (B) nested case–control studies; (C) use of detailed observations to validate data collection by questionnaire or interview; (D) randomised controlled trials. For each category we give examples of ways in which they have been employed in current pregnancy birth cohort studies.
Translated title of the contribution | Nesting sub-studies and randomised controlled trials within birth cohort studies |
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Original language | English |
Pages (from-to) | 63 - 72 |
Number of pages | 10 |
Journal | Paediatric and Perinatal Epidemiology |
Volume | 23 (S1) |
DOIs | |
Publication status | Published - Jul 2009 |