Factors influencing natural fecundity in fertile couples: a survey of puerperae and their partners.

Research Question: What is the fecundity rate among fertile couples, and which factors influence it?

Design: Retrospective study of all puerperae attending Cruces University Hospital Human Reproduction Unit over 9 months. An anonymous questionnaire was circulated to all patients, and 2510 valid completed questionnaires were collected. The main inclusion criterion was natural conception resulting in delivery.