A new study suggests that sleep disturbances and undiagnosed sleep apnea are common among middle-aged and older adults in the U.S., and these sleep problems occur more frequently among racial/ethnic minorities.
Results show that 34 percent of participants had moderate or severe sleep-disordered breathing measured by polysomnography, and 31 percent had short sleep duration with less than 6 hours per night measured by actigraphy. Validated questionnaires also showed that 23 percent reported having insomnia, and 14 percent reported excessive daytime sleepiness. Only 9 percent of participants reported being told by a doctor that they had sleep apnea.
After adjustment for sex, age, and study site, blacks were most likely to have short sleep duration of less than six hours, and they were more likely than whites to have sleep apnea syndrome, poor sleep quality, and daytime sleepiness. Hispanics and Chinese were more likely than whites to have sleep-disordered breathing and short sleep duration, but Chinese were least likely to report having insomnia.
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