Abstract
In this paper we synthesize and adopt the recently developed methods in efficiency analysis to the case of comparison of regions within a country. We take Ukrainian regions as a subject of investigation, yet the same toolkit can be applied to test disputable differences in productivity for many other countries where such questions can be of national concern (e.g., Belgium, Great Britain, Spain, etc.). Contrary to common perception of economists focusing on Ukraine, we find no significant differences in distributions and aggregate efficiencies between the agricultural and industrial regions, neither between western (mostly Ukrainian speaking) and eastern (mostly Russian speaking) regions of Ukraine. However, we find strong support for a rapidly increasing gap between the capital (Kyiv) and all the regions since 2001. Using truncated regression analysis with bootstrap we also find robust evidence that the inefficiency of regions is positively related to alcohol and tobacco consumption, the amount of foreign direct investment and inversely related to criminality in the region. On the other hand, we also find strong evidence that amount of capital in the region and its wealth is positively associated with efficiency level of this region.
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Notes
Also see more recent work of Badunenko et al. (2008) and longer reference list cited therein.
We should mention that a more complete study would also involve bad outputs of the regions (e.g., air or water pollutants).
Consistency of DEA is proved in Kneip et al. (1998) under the conditions of: (1) i.i.d. sampling of observations{(x i , y i ), i = 1,…,n}; (2) free disposability and convexity of the production set; (3) positive probability mass being in a neighborhood of the true frontier and (4) sufficient smoothness of the true frontier.
For “moving window” analysis we construct data samples as combination of 2 year data series from the available set of years (1996–2002) and compare to the latest possible frontier, e.g., 1996 and 1997 to 1997 frontier or 2000 and 2001 to 2001 frontier, etc. One of the first applications of “moving window” was made by Charnes et al. (1985).
One may argue of the reverse relationship of alcohol consumption and economic development, i.e., people drink more alcohol because they are poor. Even if this statement is true, recall that poverty does not have one-to-one relationship to inefficiency. Indeed, we see some regions being less efficient, yet richer (in terms of income per capita), whether having lower or higher consumption of alcohol and tobacco per capita. Moreover, drinking level in Ukraine is not something that appeared or significantly changed during the period of study—it is something that is going back centuries ago (see McKee 1999) and so can hardly be a variable depending on the efficiency levels of 1996–2002.
Other specifications showed similar results, and in this sense results are robust. Some specifications caused problems of numerical convergence of optimization of linear function due to high multicollinearity.
As noted by one of the referees, the efficiency score for Kyiv (Table 18) appears to be relatively small in 1999 and 2000, which also may be a reason of the insignificance of the dummy variable.
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Sources of Data
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Acknowledgments
We thank Anders Åslund, Tom Coupé, Joyce Gleason, Natalya Voynarovska and anonymous referees, as well as participants of seminars and workshops of UPEG at EERC-Kiev and NAPW IV for valuable comments. We remain solely responsible for the views expressed and mistakes made.
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The original paper was written while Pavlo Demchuk was at Kyiv Economics Institute, Kyiv, Ukraine.
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Demchuk, P., Zelenyuk, V. Testing differences in efficiency of regions within a country: the case of Ukraine. J Prod Anal 32, 81–102 (2009). https://doi.org/10.1007/s11123-009-0136-8
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DOI: https://doi.org/10.1007/s11123-009-0136-8