Pharmaceutical expenditure is undergoing very high growth, and accounts for 30% of overall healthcare expenditure in Spain. In this paper we present a prediction model for primary health care pharmaceutical expenditure based on Clinical Risk Groups (CRG), a system that classifies individuals into mutually exclusive categories and assigns each person to a severity level if s/he has a chronic health condition.
This model may be used to draw up budgets and control health spending.
Methods:
Descriptive study, cross-sectional. The study used a database of 4,700,000 population, with the following information: age, gender, assigned CRG group, chronic conditions and pharmaceutical expenditure.
The predictive model for pharmaceutical expenditure was developed using CRG with 9 core groups and estimated by means of ordinary least squares (OLS). The weights obtained in the regression model were used to establish a case mix system to assign a prospective budget to health districts.
Results:
The risk adjustment tool proved to have an acceptable level of prediction (R2 = 0.55) to explain pharmaceutical expenditure.
Significant differences were observed between the predictive budget using the model developed and real spending in some health districts. For evaluation of pharmaceutical spending of pediatricians, other models have to be established.
Conclusion:
The model is a valid tool to implement rational measures of cost containment in pharmaceutical expenditure, though it requires specific weights to adjust and forecast budgets.
Author: David Vivas-ConsueloRuth Usó-TalamantesNatividad Guadalajara-OlmedaJosé-Luis Trillo-MataCarla Sancho-MestreLaia Buigues-Pastor
Credits/Source: BMC Health Services Research 2014, 14:462
Published on: 2014-10-21
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