期刊
MEDICAL CARE
卷 59, 期 3, 页码 206-212出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MLR.0000000000001497
关键词
primary care; patient-centered medical home; health care costs; health care organizations and systems; health IT
类别
资金
- Mack Institute for Innovation Management at the Wharton School [FP0380]
The study aimed to investigate the impact of different approaches to PCMH adoption on healthcare utilization and found that PCMH adoption was associated with a >8% reduction in total expenditures, significant reductions in emergency department utilization and outpatient care, especially when heterogeneity in implementation was taken into account.
Background: The patient-centered medical home (PCMH) model has been widely adopted, but the evidence on its effectiveness remains mixed. One potential explanation for these mixed findings is variation in how the model is implemented by practices. Objective: To identify the impact of different approaches to PCMH adoption on health care utilization in a long-term, geographically diverse sample of patients. Design: Difference-in-differences evaluation of PCMH impact on cost and utilization. Subjects: A total of 5,314,284 patient-year observations from the HealthCore Integrated Research Database, and 5943 practices which adopted the PCMH model in 14 states between 2011 and 2015. Intervention: PCMH adoption, as defined by the National Committee for Quality Assurance. Measurements: Six claims-based utilization measures, plus total health care expenditures. We employ hierarchical clustering to organize practices into groups based on their PCMH capabilities, then use generalized difference-in-differences models with practice or patient fixed effects to estimate the effect of PCMH recognition (overall and separately by the groups identified by the clustering algorithm) on utilization. Results: PCMH adoption was associated with a >8% reduction in total expenditures. We find significant reductions in emergency department utilization and outpatient care, and both lab and imaging services. In our by-group results we find that while the reduction in outpatient care is significant across all 3 groups, the reduction in emergency department utilization is driven entirely by 1 group with enhanced electronic communications. Conclusion: The PCMH model has significant impact on patterns of health care utilization, especially when heterogeneity in implementation is accounted for in program evaluation.
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