Correlates of menstrual cycle characteristics among nulliparous Danish women

@inproceedings{Hahn2013CorrelatesOM,
  title={Correlates of menstrual cycle characteristics among nulliparous Danish women},
  author={Kristen A Hahn and Lauren A Wise and Anders Hammerich Riis and Ellen M Mikkelsen and Kenneth J Rothman and Kristen Banholzer and Elizabeth E Hatch},
  booktitle={Clinical epidemiology},
  year={2013}
}
OBJECTIVE We examined the association between lifestyle factors and menstrual cycle characteristics among nulliparous Danish women aged 18-40 years who were participating in an Internet-based prospective cohort study of pregnancy planners. METHODS We used cross-sectional data collected at baseline to assess the association of age, body mass index (BMI), physical activity, alcohol and caffeine consumption, and smoking with the prevalence of irregular cycles, short (≤25 days) and long (≥33 days… CONTINUE READING