OBJECTIVE: To quantify the prevalence of migraine and examine its association with sleep disorders, patterns, and symptoms in adults in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). We hypothesized that migraine would be associated with insomnia but not sleep apnea.

BACKGROUND: Sparse research has examined migraine prevalence and sleep comorbidities in underrepresented racial and ethnic groups in the United States. Hispanic/Latino adults in the United States may be at risk for worse health outcomes due to disparities in health-care access and socioeconomic stressors.

METHODS: We analyzed data collected during the baseline examination (March 2008-June 2011) from the HCHS/SOL, a community-based cohort study of self-identified Hispanic/Latino adults in the United States. The exposure was self-reported medical diagnosis of migraine, and primary outcomes were obstructive sleep apnea (apnea-hypopnea index ≥ 15 events/h from at-home sleep testing) and insomnia (≥ 9 on the Women's Health Initiative Insomnia Rating Scale). Exploratory outcomes included self-reported sleep duration, timing, sleeping pill use, and naps. We compared weighted differences in outcomes by migraine status, adjusting for age and sex in all reported models.

RESULTS: Our analytical sample included HCHS/SOL participants who completed questionnaires on sleep and migraine (16,325). The mean age (standard deviation) was 41.1 (31.7) years, 52.2% identified as female, and 39.5% had a body mass index ≥ 30 kg/m. Lifetime prevalence of migraine was 15.9% (95% confidence interval [CI]: 15.0, 16.8; 23.6% [95% CI: 22.2, 25.0] of females and 7.5% [95% CI:6.6, 8.5] of males). Those with migraine were more likely to be unemployed (50.8% vs. 36.2%) and to have a household yearly income of $20,000 (50.9% vs. 45.5%). There was no association between migraine and obstructive sleep apnea (odds ratio [OR] 0.98 [95% CI: 0.76, 1.26]) or napping (OR 0.92 [95% CI: 0.81, 1.06]). Compared to individuals without migraine, those with migraine were more likely to have insomnia (OR = 1.87; 95% CI: 1.62, 2.15) and to use sleeping pills (OR = 2.16; 95% CI: 1.80, 2.60) in sex- and age-adjusted models. Individuals with migraine also had shorter mean sleep duration (7.88 ± 2.5 h vs. 8.00 ± 2.1 h, β = -0.20; 95% CI: -0.30, -0.09) and later bedtimes (11:28 p.m. ± 5.1 h vs. 11:17 p.m. ± 4.2 h, β = 16.85; 95% CI: 3.58, 30.13; weekdays) in sex- and age-adjusted models.

CONCLUSION: Self-reported medical diagnosis of migraine is common in Hispanic/Latino adults, especially females. Migraine is not associated with obstructive sleep apnea. Consistent with non-Hispanic/Latino populations, migraine is associated with insomnia in the HCHS/SOL.