The results, published in 1994, of the original National Comorbidity Survey (NCS), which looked at comorbidity in a population of 8,000 persons, found that:
a. nearly 90% of persons who reported recent severe psychiatric symptoms met DSM criteria for three or more disorders
b. less than 10% of persons who had one psychiatric diagnosis met the DSM criteria for two or more disorders
c. the only dual diagnosis of any significance was alcoholism and schizophrenia
d. few, if any, persons in the population studied had more than one psychiatric diagnosis
A
The NCS found that nearly 90% of persons who reported recent severe psychiatric symptoms met DSM criteria for three or more disorders. For example, depression and panic disorder commonly occurred together, as did social phobia and a variety of mood disorders.
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