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Explaining primary healthcare pharmacy expenditure using classification of medications for chronic conditions

Published: September 28, 2011
Category: Bibliography > Papers
Authors: Barrachina I, De-la-Poza E, Guadalajara N, Trillo JL, Uso R, Vivas D
Countries: Spain
Language: null
Types: Care Management
Settings: Academic

Health Policy 103:9-15.

Research Centre for Health Care Economics and Management, Universitat Politècnica de València, Valencia, Spain

BACKGROUND: The Valencian Autonomous Community (Spain) has implemented a scheme of purchasing services with the participation of public and private providers. Five districts are managed using public-private partnership. The financing model is capitation and inter-center invoice. The pharmaceutical benefits are not included in the per capita assignment.

OBJECTIVES: Modeling and explaining pharmacy expenditure using electronic prescriptions drug data.

METHODS: A database of electronic prescription corresponding to 625,246 patients between November 2008 and October 2009 was used to run four linear models that explain the pharmaceutical expenditures. We take as dependent variable the neperian log of total pharmacy annual cost per patient in the primary health setting. The independent variables used combined demographics with revised classification in 18 chronic conditions obtained from the anatomical therapeutic chemical classification index (ATC).

RESULTS: The retrospective model selected included: gender, pharmaceutical co-payment status and 8 dummy variables for the number of chronic conditions of each patient from 1 to 8 or more. The goodness-of-fit achieved is measured in R(2) of 57%.

CONCLUSIONS: These models must be considered in the current capitation system for pharmaceutical budgeting in a primary care setting established at regional level, as is the case in the Valencian Autonomous Community. The use of diagnostics and information regarding hospital encounters appears to be a complementary option for refining models of capitation of pharmaceutical and total health expenditure.

PMID: 21956046

Population Markers,Capitation,Prescription Drug Use and Expenditures,Spain,Adolescent,Adult,Age Factors,Aged,80 and Over,Child,Preschool,Chronic Disease/classification,Gender,Middle Aged,Models,Economic,National Health Programs/economics,National Health Programs/statistics & numerical data,Prescription Drugs/classification,Prescription Drugs/economics,Prescription Drugs/therapeutic use,Primary Health Care/statistics & numerical data,Young Adult

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