Background: Asthma contributes to considerable morbidity and health care utilization in adults. Insufficient and excessive sleep duration have known adverse effects on health. Little is known regarding the effect of sleep duration on health outcomes in adults with asthma.

Objective: To examine associations between sleep duration, patient-reported outcomes, and health care use in adults with asthma from the National Health and Nutrition Examination Survey.

Methods: Cross-sectional data from the 2007 to 2012 National Health and Nutrition Examination Survey were analyzed. Asthma was identified by self-report. Habitual hours of sleep duration were categorized as short (≤5), normal (6-8), and long (≥9). Multivariate regression analyses were used to examine the associations between sleep duration and patient-reported outcomes and health care use.

Results: Of the 1389 adults with asthma, 26% reported short sleep duration, 66% reported normal sleep duration, and 8% reported long sleep duration. Those with short sleep duration had increased asthma attacks (adjusted odds ratio [aOR] 1.58; 95% confidence interval [CI] 1.13-2.21), coughing (aOR 1.95; 95% CI 1.32-2.87), and overnight hospitalizations (aOR 2.14; 95% CI 1.37-3.36) compared with those having normal sleep duration. They also reported worse health-related quality of life, including days of poor physical health, mental health, and inactivity because of poor health (P values < .05). Those with long sleep had more activity limitations because of wheezing compared with those with normal sleep (aOR 1.82; 95% CI 1.13-2.91).

Conclusion: Compared with adults having asthma and normal sleep duration, those having short sleep duration experience more frequent asthma attacks, increased health care use, and worse health-related quality of life, whereas those with long sleep duration experience more frequent activity limitation.