Association of High-Cost Health Care Utilization With Longitudinal Changes in Patient-Centered Medical Home Implementation

Association between service scope of primary care facilities and prevalence of high-cost population: a retrospective study in rural Guizhou, China

BACKGROUND

High-cost (HC) patients, defined as the small percentage of the population that accounts for a high proportion of health care expenditures, are a concern worldwide. Previous studies have found that the occurrence of HC population is partially preventable by providing a greater scope of primary health care services. However, no study has examined the association between the service scope of primary care facilities and the prevalence of HC populations. Therefore, this study aimed to investigate the association between the service scope of primary care facilities (PCFs) and the prevalence of HC populations within the same communities.

METHODS

A multistage, stratified, clustered sampling method was used to identify the service scope of PCFs as of 2017 in rural Guizhou, China. The claims data of 299,633 patients were obtained from the local information system of the New Rural Cooperation Medical Scheme. Patients were sorted by per capita inpatient medical expenditures in descending order, and the top 1%, top 5% and top 10% of patients who had incurred the highest costs were defined as the HC population. Logistic regression models were used to assess the association between the service scope of PCFs and the prevalence of the HC population.

RESULTS

Compared with those in the 95% of the sample deemed as the general population, those in the top 5% of the sample deemed as the HC population were more likely to be over the age of 30 (P <  0.001), to be female (P = 0.014) and to be referred to high-level hospitals (P <  0.001). After controlling for other covariates, patients who lived in the communities serviced by the PCFs with the smallest service scope were more likely to be in the top 1%, top 5% and top 10% of the HC population.

CONCLUSION

A greater PCF service scope was associated with a reduction in the prevalence of the HC population, which would mean that providing a broader PCF service scope could reduce some preventable costs, thus reducing the prevalence of the HC population. Future policy efforts should focus on expanding the service scope of primary care providers to achieve better patient outcomes.

Using a theoretical framework to inform implementation of the patient-centred medical home (PCMH) model in primary care: protocol for a mixed-methods systematic review

BACKGROUND

The patient-centred medical home (PCMH) was conceived to address problems that primary care practices around the world are facing, particularly in managing the increasing numbers of patients with multiple chronic diseases. The problems include fragmentation, lack of access and poor coordination. The PCMH is a complex intervention combining high-quality primary care with evidence-based disease management. Becoming a PCMH takes time and resources, and there is a lack of empirically informed guidance for practices. Previous reviews of PCMH implementation have identified barriers and enablers but failed to analyse the complex relationships between factors involved in implementation. Using a theoretical framework can help with this, giving a better understanding of how and why interventions work or do not work. This review will aim to refine an existing theoretical framework for implementing organisational change - the Consolidated Framework for Implementation Research (CFIR) - to apply to the implementation of the PCMH in primary care.

METHODS

We will use the 'best-fit' framework approach to synthesise evidence for implementing the PCMH in primary care. We will analyse evidence from empirical studies against CFIR constructs. Where studies have identified barriers and enablers to implementing the PCMH not represented in the CFIR constructs, we will use thematic analysis to develop additional constructs to refine the CFIR. Searches will be undertaken in MEDLINE (Ovid), Embase (Ovid), Web of Science Core Collection (including Science Citation Index and Social Science Citation Index) and CINAHL. Gaps arising from the database search will be addressed through snowballing, citation tracking and review of reference lists of systematic reviews of the PCMH. We will accept qualitative, quantitative and mixed methods primary research studies published in peer-reviewed publications. A stakeholder group will provide input to the review.

DISCUSSION

The review will result in a refined theoretical framework that can be used by primary care practices to guide implementation of the PCMH. Narrative accompanying the refined framework will explain how the constructs (existing and added) work together to successfully implement the PCMH in primary care. The unpopulated CFIR constructs will be used to identify where further primary research may be needed.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42021235960.