State Health Care Reform: The Effects of Program Realignment on Severely Mentally Ill Persons in California's Community-Based Mental Health System

Data from California's Client Data System (CDS) were obtained for a six-year period, for fiscal years 1988 to 1990 and 1992 to 1994. The CDS contains extensive information on a quarter-million individuals who received public mental health services in California annually. A sample of 75,791 patients, representing 5 percent of the patient population for each of the six years, was randomly selected.

The study's dependent variables included psychiatric diagnosis, utilization level, and estimated cost of the services provided. Psychiatric diagnosis was the principal diagnosis at admission, assessed by DSM-III-R criteria. Diagnoses included schizophrenia, mood disorders, other psychotic disorders, organic mental disorders, substance use disorders, anxiety disorders, personality disorders, and adjustment disorder. The utilization level was the amount of treatment, which was measured by units. Each unit represented a 24-hour period in a 24-hour-care setting—that is, inpatient care—or a client contact with mental health professionals or facilities for outpatient services. Service cost was the gross treatment cost estimated by providers. The independent variable, time, was coded as a dummy variable, with 0 indicating the prerealignment period and 1 indicating the postrealignment period.

A variety of demographic variables, including age, gender, ethnicity, education, and employment status, were used as covariates. The level of functional impairment is an additive predictor of need (6) and therefore was controlled in the analysis as a covariate because an artificial cutoff on this score was not meaningful in categorizing the level of need.

Logistic regression analysis was conducted to study changes in the rates of psychiatric diagnoses over the realignment period for inpatient treatment, outpatient services, and both types of services. Each of the eight psychiatric diagnoses was used as a dependent variable, and time, indicating the pre- and postrealignment periods, was used as the independent variable.

Using a general linear model, analysis of variance was conducted to compare differences in utilization and costs for each psychiatric diagnosis between the pre- and the postrealignment periods. Least-squares means were computed to compare the differences over time with adjustment for covariate variables.

Table 1 shows the differences in psychiatric diagnoses between the pre- and postrealignment periods for inpatient care, outpatient care, and all types of services. Over the realignment period, for patients receiving inpatient care, diagnoses of mood disorders and other psychotic disorders increased by a factor of 1.3 (p≤.01), while diagnoses of schizophrenia, substance use disorders, personality disorders, and adjustment disorder decreased significantly (p≤.01). For patients receiving outpatient services, diagnoses of mood disorders, other psychotic disorders, and anxiety disorders increased significantly by either 1.4 times or 1.2 times (p≤.01). Diagnoses of schizophrenia were reduced to 88 percent of the prerealignment level, personality disorders were reduced to 48 percent of that level, and adjustment disorders were reduced to 57 percent of that level (p≤.01). The results were the same when all types of services were considered.

Table 2 shows differences in utilization between the two periods. After the realignment, patients with schizophrenia or other psychotic disorders received significantly more inpatient treatment (p≤.01). Patients with schizophrenia, mood disorders, other psychotic disorders, organic mental disorders, substance use disorders, and personality disorders received significantly more outpatient treatment (p≤.01), while patients with adjustment disorder received significantly less treatment in the outpatient setting (p≤.01).

Table 2 also shows differences in costs of treatment over the two periods. After the realignment, inpatient treatment costs were significantly higher for patients with schizophrenia, mood disorders, other psychotic disorders, organic mental disorders, substance use disorders, and adjustment disorder (p≤.01). However, treatment costs for all psychiatric diagnoses were significantly lower for outpatient services after the realignment (p≤.01). When all types of services were examined, treatment costs for all psychiatric diagnoses except organic mental disorders were significantly lower after the realignment.

After implementation of the realignment of the community-based mental health service system in California, admission rates for all types of services increased significantly for patients with more severe diagnoses and fell significantly for those with mild diagnoses. Clearly, regardless of the type of services, patients with severe mental disorders were more likely to be admitted to treatment after the realignment, and patients with mild mental disorders were less likely. Patients with schizophrenia were the exception. Their admission rate fell significantly across all service types.

Conceivably, the decreased rate of diagnoses of schizophrenia may reflect a recent change in diagnostic trends. Diagnostic screening for schizophrenia might also be more rigorous when the mental health system monitors it more closely because of financial considerations. However, the sharp contrast between the increase in diagnoses of more severe mental disorders and the decrease in diagnoses of mild mental disorders cannot be fully explained by diagnostic modifications. Probably the mental health system was realigned to take in more persons with severe mental illness or to take in fewer persons with less severe illness.

A deliberate effort to alter admission rates to services for patients with various diagnoses can also be seen in the context of treatment type. The findings indicated that after the realignment the rate of substance use disorders was significantly reduced in the inpatient setting and the rate of anxiety disorders was significantly increased in the outpatient setting.

It has long been argued that substance use disorders can be treated more efficiently in settings other than the inpatient setting (7,8) and that patients with anxiety disorders can obtain adequate treatment at lower cost in outpatient services. Thus a drop in inpatient treatment of substance use disorders and an increase in outpatient treatment of anxiety disorders might have occurred as a result of efforts to reduce costs under the realignment.

After the realignment, the amount of inpatient treatment provided was significantly higher for patients with severe diagnoses—that is, schizophrenia and other psychotic disorders. The amount of outpatient treatment increased for most diagnoses.

During the realignment, nearly 1 percent of severely mentally ill patients were shifted from state hospitals to community-based services. Thus the results might reflect an increased level of need among inpatients. The level of need for outpatients with schizophrenia, substance use disorders, and personality disorders also may have increased during the realignment, because these persons might have been shifted from inpatient care to outpatient services. For outpatients with mood disorders, other psychiatric disorders, and organic mental disorders, the increased utilization of outpatient services indicated an increased attention to severe mental disorders. Overall, after the realignment, the level of utilization of inpatient care was not cut as severely as one might expect. The amount of outpatient services was increased for patients with severe diagnoses and met the level of needs for patients with most mild diagnoses.

After the realignment, the treatment cost per inpatient was significantly higher, and the level of inpatient utilization stayed the same for most diagnoses, suggesting that inpatients continued to receive expensive services when it was necessary. However, outpatient costs per user were significantly lower for all diagnoses, despite an increased utilization level for patients with most diagnoses. The results suggest that the cost of outpatient services was significantly lower in the postrealignment period as a result of service contracting prompted by the realignment program. When both inpatient and outpatient services were considered, treatment cost per user was significantly lower in the postrealignment period for all diagnoses except organic mental disorders, implying that savings were achieved mainly through decreases in the costs of outpatient services.

After the implementation of the State-Local Program Realignment Act in California, patients who needed services the most seemed to be least adversely affected. For patients with more severe psychiatric diagnoses, access to the mental health system was actually enhanced. These patients were more likely to be admitted for treatment of all types, particularly inpatient care. After the realignment, patients with more severe diagnoses received an equal or greater amount of inpatient treatment or a greater amount of outpatient treatment.

For patients with less severe diagnoses, the results were mixed. After the realignment, they were less likely to be admitted for treatment of any type, or, if they were sick enough to be treated, they received the same amount of inpatient treatment or a greater amount of outpatient treatment. The level of treatment could be decreased if the severity of patients' illness increased.

Overall, under the financial constraints imposed by the realignment, patients' needs for services were met in order of severity of mental illness. The most severely mentally ill persons received the highest priority for mental health services.

This study was supported by grant P50-MH-43694 from the National Institute of Mental Health and grant T32-HS00026-10 from the Agency for Health Care Policy Research.

Dr. Zhang is senior research associate in the department of medicine in the School of Medicine at Case Western Reserve University (W-G37), 10900 Euclid Avenue, Cleveland, Ohio 44106-4961 (e-mail [email protected]). Dr. Scheffler is distinguished professor of health economics and public policy in the department of health policy and research in the School of Public Health at the University of California, Berkeley. Dr. Snowdenis professor of social welfare in the School of Social Welfare and director of the Center for Mental Health Services Research at the University of California, Berkeley. Howard H. Goldman, M.D., Ph.D., and Colette Croze, M.S.W.,are editors of this column.