Factors relating to insomnia during the menopausal transition as evaluated by the Insomnia Severity Index.

Background: Although the menopause associates to poor sleep quality, insomnia severity data in the menopausal transition is scarce or lacking.

Objective: To assess insomnia prevalence, severity and related factors in mid-aged women.

Methods: In this cross-sectional study 340 women (40 to 59 years) completed the Insomnia Severity Index (ISI) and a general questionnaire containing personal/partner data.