Literature Collection

Patient-centered medical homes based at federally-qualified health centers (FQHCs) can benefit patients with complex health needs, such as severe mental illness (SMI). However, little is known about FQHC characteristics associated with changes in health care expenditures and utilization for individuals with SMI. Using North Carolina Medicaid claims and FQHC data from the Uniform Data System, multivariate regression identified FQHC characteristics associated with total expenditures, medication adherence and emergency department utilization among adults with SMI, controlling for time-invariant differences by health center. Few of the FQHC-level factors affected the outcomes-not even offering on-site behavioral health services. Although the FQHCs in the analysis sample exhibited considerable variation in the provision of specialty behavioral services and in staffing configurations, it may be the case that the examination of average effects across a heterogeneous group of adults with SMI mask benefits of FQHCs to certain subgroups. These findings support the conclusion that there is no "one-size-fits-all" model that works best for this diverse patient population. Study results are relevant for practices embarking on expanded medical home services for people with SMI.

To identify whether medical homes in FQHCs have advantages over other group and individual medical practices in caring for people with severe mental illness. Models estimated the effect of the type of medical home on monthly service utilization, medication adherence, and total Medicaid spending over a 4-year period for adults aged 18 or older with a major depressive disorder (N = 65,755), bipolar disorder (N = 19,925), or schizophrenia (N = 8501) enrolled in North Carolina's Medicaid program. Inverse probability of treatment weights (IPTW) were used to adjust for nonrandom assignment of patients to practices. Generalized estimating equations for repeated measures were used with gamma distributions and log links for the continuous measures of medication adherence and spending, and binomial distributions with logit links for binary measures of any outpatient or any emergency department visits. Adults with major depression or bipolar disorders in FQHC medical homes had a lower probability of outpatient service use than their counterparts in individual and group practices. The probability of emergency department use, medication adherence, and total Medicaid spending were relatively similar across the three settings. This study suggests that no one type of medical practice setting-whether FQHC, other group, or individual-consistently outperforms the others in providing medical home services to people with severe mental illness.