OPEN MINDS, The Behavioral Health & Social Service Industry Analyst Industry Statistics Over 52 million Americans had some type of mental health or substance abuse disorder in 1991. While 29.5% of the population had either a mental health or substance abuse disorder, 4.7% were dually diagnosed with both a mental health and substance abuse disorder. These are the findings of the "National Comorbity Survey conducted by the Substance Abuse and Mental Health Services Administration (SAMHSA). Another significant finding of the research is that males were . . .