Concurrent insomnia and habitual snoring are associated with adverse pregnancy outcomes

Pregnant women report disturbed sleep, including habitual snoring and insomnia. The co-occurrence among non-pregnant cohorts is 30%–50% with increased risk for adverse health outcomes. To date, no study has examined the comorbid status or impact in pregnant women. The prevalence of insomnia (INS) and habitual snoring (HS) were examined in 439 women in the third trimester (34.1 ± 3.7 weeks). Habitual snoring (snoring ≥3 times/week) was self-reported. Insomnia was determined using the Insomnia Symptom Questionnaire (ISQ). Four groups emerged: HS−/ISQ− (n = 161; 36.7%), HS−/ISQ+ (n = 146; 33.3%), HS+/ISQ− (n = 63; 14.4%), and HS+/ISQ+ (n = 69; 15.7%). Logistic regression models revealed both independent associations, as well as comorbid HS/INS status with excessive daytime sleepiness (aOR 3.8, 95%CI 2.3–6.5, p