Preconception use of antibiotics and fecundability: a Danish prospective cohort study.

Objective: To assess the association between preconception antibiotic use and fecundability, the per menstrual cycle probability of conception.

Design: SnartForaeldre.dk, a Danish prospective cohort study of women trying to conceive (2007-2020).

Association of Asthma Diagnosis and Medication Use with Fecundability: A Prospective Cohort Study.

Purpose: Asthma has been positively associated with irregular menses and infertility in some studies, but data are limited on the relation between asthma medication use and fecundability (i.e., average per-cycle probability of conception among non-contracepting couples).

Fecundability in relation to use of fertility awareness indicators in a North American preconception cohort study.

Objective: To quantify the frequency of use of selected fertility awareness indicators and to assess their influence on fecundability.

Design: Web-based prospective cohort study.

Setting: Not applicable.

Female sleep patterns, shift work, and fecundability in a North American preconception cohort study.

Objective: To prospectively evaluate the association between female sleep patterns, shift work, and fecundability.

Design: Web-based preconception cohort study, Pregnancy Study Online (PRESTO).

Setting: Not applicable.

Male sleep duration and fecundability in a North American preconception cohort study.

Objective: To evaluate prospectively the association between male sleep duration and fecundability.

Design: Pregnancy Online Study (PRESTO), a Web-based prospective cohort study of North American couples enrolled during the preconception period (2013-2017).

Setting: Not applicable.