Notes: Participants were asked, “On average, how many hours of sleep do you get in a 24-hour period?”
Family income groups were defined based on family income as a percentage of the federal poverty threshold. Poverty thresholds, which are published by the U.S. Census Bureau, vary by family size and the number of children in the family. Family income was imputed when missing using multiple imputation methodology.
Metropolitan status of residence was based on the household residence location. Metropolitan is located within a metropolitan statistical area, defined as a county or group of contiguous counties that contains at least one urbanized area of ≥50,000 population. Surrounding counties with strong economic ties to the urbanized area also are included. Nonmetropolitan areas do not include a large urbanized area and are generally thought of as more rural.
Estimates are based on household interviews of a sample of the civilian, noninstitutionalized U.S. population and are derived from the National Health Interview Survey sample adult component.
** 95% confidence interval.
Data Source: National Health Interview Survey, 2013 data.
Source: Centers for Disease Control and Prevention: Percentage of Adults Who Average ≤6 Hours of Sleep, by Family Income Group and Metropolitan Status of Residence — National Health Interview Survey, United States, 2013