Loading...
About one third of the U.S. population experience sleep problems, and 10% to 15% meet DSM-IV criteria for insomnia. Two studies explore how sleep problems affect daytime functioning.
Researchers examined responses about possible sleep complaints by 5692 participants in the National Comorbidity Survey Replication. The self-reported 12-month prevalence of one or more sleep problems was 36%; nonrestorative sleep was the most common problem (25%). About half of respondents with a sleep problem had a DSM-IV diagnosis that (unlike in other research) was no more likely to be depression than other disorders. Respondents with three or more disorders were 6.9 times more likely to have any sleep problem than respondents without DSM-IV disorders, but no…