Menstrual cycle characteristics and fecundability in a North American preconception cohort.

ABSTRACT:

Purpose

The aim of this study was to evaluate the association between menstrual cycle characteristics in early life and adulthood and fecundability.

Methods

Pregnancy Study Online (PRESTO) is an Internet-based preconception cohort study of pregnancy planners from the United States and Canada. During the preconception period, we enrolled 2189 female pregnancy planners aged 21-45 years who had been attempting conception for ≤6 cycles. Women self-reported menstrual cycle characteristics via an online baseline questionnaire, and pregnancy status was ascertained through bimonthly follow-up questionnaires. Proportional probabilities models were used to estimate fecundability ratios (FRs) and 95% confidence intervals (CIs), adjusting for potential confounders.

Results

Compar

SUBMITTER: Wesselink AK 

PROVIDER: S-EPMC4964792 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature