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Journal of Medical Systems

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01.10.2011 | Original Paper

The Impact of Non-Discretionary Factors on DEA and SFA Technical Efficiency Differences

verfasst von: Nick Kontodimopoulos, Nikolaos D. Papathanasiou, Angeliki Flokou, Yannis Tountas, Dimitris Niakas

Erschienen in: Journal of Medical Systems | Ausgabe 5/2011

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Abstract

The purpose of this study was to examine if factors of the external operating environment can explain differences in technical efficiency derived from Data Envelopment Analysis (DEA) and Stochastic Frontier Analysis (SFA). In a sample of 124 dialysis facilities, technical efficiency was compared according to ownership, region, years in operation and size. With second-stage Tobit regression, DEA and SFA efficiency was regressed against these environmental factors to determine their potential for predicting technical efficiency, as well as the efficiency differences between the two frontier methods. DEA expectedly generated lower mean efficiency scores than SFA (68.2% vs. 79.4%, P < 0.001), due to the “random effects” term computed by the latter, in addition to “true” inefficiency. This finding was consistent for the subgroups formed on the basis of the environmental factors. Half the variation in the DEA-SFA efficiency differences was explained by environmental factors. This suggests that in addition to market instabilities, luck, and other related phenomena, decision-makers in their effort to determine optimal resource allocation, should point their attention to the potentially useful insight provided by environmental factors.

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Titel: The Impact of Non-Discretionary Factors on DEA and SFA Technical Efficiency Differences
verfasst von: Nick Kontodimopoulos
Nikolaos D. Papathanasiou
Angeliki Flokou
Yannis Tountas
Dimitris Niakas
Publikationsdatum: 01.10.2011
Verlag: Springer US
Erschienen in: Journal of Medical Systems / Ausgabe 5/2011
Print ISSN: 0148-5598
Elektronische ISSN: 1573-689X
DOI: https://doi.org/10.1007/s10916-010-9521-0

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