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as a starting point. On the basis of these estimation equations, the hidden labour force was calculated up to 2007 using … number of German men who were part of the hidden labour force dropped relatively sharply. This surprising growth in the …
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2003 to analyze productivity and inefficiency. The data suffer from nonresponse in the most important variables (output … statistics. Therefore the missing values are multiply imputed. The analysis of the estimation results shows that, particularly in …
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"This paper discusses methodological problems of standard errors and treatment effects. First, heteroskedasticity- and cluster-robust estimates are considered as well as problems with Bernoulli distributed regressors, outliers and partially identified parameters. Second, procedures to determine...
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