Spatial effects in hospital expenditures: A district level analysis.

Area of Science:

• Health Economics
• Spatial Econometrics
• Public Health Policy

Background:

• Understanding healthcare expenditure spillovers is crucial for efficient resource allocation.
• Spatial dependencies in hospital spending can arise from various factors, including patient flows and information sharing.
• Previous research has not fully distinguished spillovers based on the nature of hospitalizations.

Purpose of the Study:

• To analyze spatial spillovers in hospital expenditures across Italian Health Districts.
• To differentiate spillover effects for potentially inappropriate hospitalizations versus complex medical procedures.
• To assess the roles of geographical and institutional proximity in explaining spatial dependence.

Main Methods:

• Application of spatial econometric models to analyze hospital expenditure data.
• Estimation of models accounting for global spillovers and distinct expenditure types.
• Development of alternative spatial weight matrices to model different connectivity structures (geographical vs. institutional).

Main Results:

• Significant positive spatial spillovers were found for potentially inappropriate hospital admissions.
• Spatial spillover effects were generally not significant for expenditures on high-complexity medical procedures.
• Geographical and institutional proximity contribute differently to spatial dependence, varying by expenditure type.

Conclusions:

• Healthcare expenditure spillovers are heterogeneous, primarily driven by potentially inappropriate admissions.
• Public health planners should consider spatial interactions when designing interventions and allocating resources.
• Targeted strategies are needed to mitigate negative spillovers from specific types of hospitalizations.