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«Der Open-Access-Publikationsserver der ZBW – Leibniz-Informationszentrum Wirtschaft The Open Access Publication Server of the ZBW – Leibniz ...»

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Importantly, G is a kernel chosen to smooth Yi. After estimation of the CDF the conditional

quantile is given by the inverted conditional CDF. Therefore:

–  –  –

Notes: The sample includes 8,800 observations from the ZEW-ICT Survey of 2003 and 2006.

Table 3: Quantile Regression: The Impact of ICT on Firm-Specific Deviation

–  –  –

Bootstrapped standard errors with 400 replications are reported in parenthesis.

Industry dummies, location and exporting behavior included.

*** Significant at 1%.** Significant at 5%. * Significant at 10%.

Table 4: Impact of ICT on Firm-Specific Heterogeneity

–  –  –

Robust standard errors are reported in parenthesis. Industry dummies, location and exporting behavior included.

*** Significant at 1%.** Significant at 5%. * Significant at 10%.

Table 5: Impact of Firm-Specific Heterogeneity on R&D Intensity - ICT Intensive Firms

–  –  –

(1) (2) (3) (4) (5) First Stage (Dep. Var.: Firm Heterogeneity 2006)

–  –  –

Robust standard errors are reported in parenthesis. Industry dummies, location and exporting behavior included.

First stage in column 5 reports estimated gradients evaluated at the median of the explanatory variable. p-values from a significance tests are reported in parenthesis. Second stage estimations in column 5 are in thousands and are calculated from a subsample of the large data set after pairwise differencing. See Blundell and Powell (2007).

For the second stage in column 5 bootstrapped standard errors with 500 replications are reported in parenthesis.

*** Significant at 1%.** Significant at 5%. *Significant at 10%.

Table 6: Impact of Firm-Specific Heterogeneity on R&D Intensity - Full Sample

–  –  –

(1) (2) (3) (4) (5) First Stage (Dep. Var.: Firm Heterogeneity 2006)

–  –  –

Robust standard errors are reported in parenthesis. Industry dummies, location and exporting behavior included.

First stage in column 5 reports estimated gradients evaluated at the median of the explanatory variable. p-values from a significance tests are reported in parenthesis. Second stage estimations in column 5 are in thousands and are calculated from a subsample of the large data set after pairwise differencing. See Blundell and Powell (2007).

For the second stage in column 5 bootstrapped standard errors with 500 replications are reported in parenthesis.

*** Significant at 1%.** Significant at 5%. *Significant at 10%.



Pages:     | 1 |   ...   | 3 | 4 ||


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