OPEN MINDS, The Behavioral Health & Social Service Industry Analyst Industry Statistics Spending on inpatient care for mental health and substance abuse problems has declined from 42.5% to 31% of total behavioral health expenditures during the period 1987 to 1997. Viewed separately, overall costs for hospital-based mental health services decreased from 40.5% to 29.6% of overall expenditures during the same period. Spending for substance abuse treatment services went from 52.9% to 39.8%. As might be expected, the overall costs for outpatient and residential services increased . . .