By the numbers The blues


9.5: Percentage of American adults who have mood disorders, which include major depression, mild chronic depression and bipolar disorder

30: Median age for the onset of mood disorders

6.7: Percentage of Americans who suffer from major depression

31,655: Suicides in the United States in 2002

90-plus: Percentage of suicides who had mental disorders or substance-abuse problems

Source: National Institute of Mental Health