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2013, Number 3

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Cir Cir 2013; 81 (3)

Total knee and hip prosthesis: variables associated with costs

Herrera-Espiñeira C, Escobar A, Navarro-Espigares JL, Luna-del Castillo JD, García-Pérez L, Godoy-Montijano A

Language: Spanish
References: 25
Page: 207-213
PDF size: 105.48 Kb.


ABSTRACT

Background: The elevated prevalence of arthrosis in Western countries, the high costs of hip and knee arthroplasty, and the wide variations in the clinical practice have generated considerable interest in comparing the associated costs before and after the surgery. Objective: To determine the influence of a number of variables on the costs of total knee and hip arthroplasty surgery during the hospital stay and during the one-year post-discharge.
Methods: A prospective multi-center study was performed in 15 hospitals from three Spanish regions. Relationships between the independent variables and the costs of hospital stay and postdischarge follow-up were analyzed by using multilevel models in which the “hospital” variable was used to group cases. Independent variables were: age, sex, body mass index, preoperative quality of life (SF-12, EQ-5 and Womac questionnaires), surgery (hip/knee), Charlson Index, general and local complications, nº beds and economic-institutional dependency of the hospital, the autonomous region to which it belongs, and the presence of a caregiver.
Results: The cost of hospital stay, excluding the cost of the prosthesis, was 4,734€, and the post-discharge cost was 554€. With regard to hospital stay costs, the variance among hospitals explained 44-46% of the total variance among the patients. With regard to the post-discharge costs, the variability among hospitals explained 7-9% of the variance among the patients.
Conclusions: There is considerable potential for reducing the hospital stay costs of these patients, given that more than 44% of the observed variability was not determined by the clinical conditions of the patients but rather by the behavior of the hospitals.


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