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Article

Selection bias in semen studies due to self-selection of volunteers

23 Sept 2004

Abstract excerpt

BACKGROUND: Reports of a secular decrease in semen quality remain controversial, particularly due to the possibility of selection bias. We aimed to describe the potential bias due to self-selection of volunteers in semen studies involving fecund men. METHODS: Using data from the French multicentre study REPRHOM, we compared the characteristics of the partners of pregnant women for three levels of participation:...

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PMID: 15388680
DOI: 10.1093/humrep/deh521

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026.

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