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This Month in Archives of General Psychiatry
February 2002

This Month in Archives of General Psychiatry

Arch Gen Psychiatry. 2002;59(2):112. doi:10.1001/archpsyc.59.2.112

Current estimates of mental disorder prevalence have been criticized as being too high for the effective planning of treatment services. In keeping with the DSM-IV requirement for mental disorders to be "clinically significant," Narrow et al Article reanalyzed 2 community surveys, requiring a clinical significance criterion to be met before a diagnosis could be made. They found that using this criterion lowered prevalence rates substantially, from 28.0% to 18.5%, identifying persons more likely to need treatment. Discrepancies in estimates between the surveys were also reduced.

A Commentary by Wakefield and Spitzer is included.

People wonder if they really need 8 hours of sleep. Analyzing more than1.1 million people followed up for 6 years, Kripke et al Article found that those who usually slept 6.5 to 7.4 hours per night had the best survival. Sleep of 8 hours or more was associated with increased mortality. There was relatively little risk associated with sleep as short as 4.5 hours, and no mortality risk associated with insomnia, but those who used sleeping pills had higher mortality. Clinical trials are needed to determine which treatments of sleep improve long-term health.