Risk of selection bias due to non-participation in a cohort study on pubertal timing.
Paediatr Perinat Epidemiol
; 34(6): 668-677, 2020 11.
Article
em En
| MEDLINE
| ID: mdl-32319135
ABSTRACT
BACKGROUND:
Non-participation in aetiologic studies of pubertal timing is frequent. However, little effort has been given to explore the risk and potential impact of selection bias in studies of pubertal timing.OBJECTIVE:
We aimed to explore the risk of selection bias due to non-participation in a newly established puberty cohort.METHODS:
We evaluated whether three maternal exposures chosen a priori (pre-pregnancy obesity, smoking, and alcohol drinking during pregnancy) were associated with participation, whether pubertal timing was associated with participation, and whether selection bias influenced the associations between these exposures and pubertal timing. In total, 22 439 children from the Danish National Birth Cohort born 2000-2003 were invited to the Puberty Cohort and 15 819 (70%) participated. Exposures were self-reported during pregnancy. Pubertal timing was measured using a previously validated marker, "the height difference in standard deviations" (HDSDS), which is the difference between pubertal height and adult height, both in standard deviations. For this study, pubertal height at around 13 years in sons and around 11 years in daughters was obtained from an external database, and adult height was predicted based on parental height reported by mothers.RESULTS:
Participation was associated with most exposures but not with pubertal timing, measured by HDSDS. The associations between exposures and HDSDS were comparable for participants only and all invited for participation.CONCLUSION:
In conclusion, the risk of selection bias in aetiologic studies on pubertal timing in the Puberty Cohort appears minimal.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Efeitos Tardios da Exposição Pré-Natal
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Menarca
Tipo de estudo:
Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Child
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Female
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Humans
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Pregnancy
Idioma:
En
Revista:
Paediatr Perinat Epidemiol
Assunto da revista:
EPIDEMIOLOGIA
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PEDIATRIA
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PERINATOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Dinamarca