Article
Selection bias in a male-offspring cohort investigating fecundity: is there reason for concern?
12 Nov 2022
Abstract excerpt
STUDY QUESTION: Is there risk of selection bias in etiological studies investigating prenatal risk factors of poor male fecundity in a cohort of young men? SUMMARY ANSWER: The risk of selection bias is considered limited despite a low participation rate. WHAT IS KNOWN ALREADY: Participation rates in studies relying on volunteers to provide a semen sample are often very low. Many risk factors for poor male...
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