Environmental factors and productivity on Dutch hospitals: a semi-parametric approach |
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Authors: | Jos L T Blank Vivian G Valdmanis |
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Institution: | (1) Institute for Public Sector Efficiency Studies, Delft University of Technology, P.O. Box 5015, 2600 GA Delft, The Netherlands;(2) University of the Sciences, Philadelphia, PA, USA |
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Abstract: | This paper describes the efficiency of Dutch hospitals using the method of Data Envelopment Analysis (DEA). In particular
the analysis focuses on explaining cost inefficiency measures due to each hospital’s operating environment. In previous works,
the resulting DEA score is regressed on environmental factors via a Tobit approach. Previously, these approaches have been
used (Simar and Wilson, J Prod Anal 7(1):63–80, 2000) but later these authors (Simar and Wilson 2007) demonstrated that bias is incurred since the efficiency score is a point estimate without a probability distribution around
it that is required by the Tobit methodology. In this paper we use the Simar and Wilson bootstrapping techniques in order
to obtain more efficient estimates of the environmental effects. It is shown that differences in estimated effects exist between
the non-bootstrapped and bootstrapped models. |
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