 This service structure is vastly different from the organization's original model for treatment in the mid-1960s, which was primarily in the form of institutionalization in large state hospitals.On average, nearly 6,400 Oklahomans were in the state's mental hospitals on any given day.In FY13, services were provided to approximately 187,000 individuals through the ODMHSAS system, but fewer than 5 percent of required hospital care.