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This article describes a new Stata routine, xtcsd, to test for the presence of cross-sectional dependence in panels with many cross-sectional units and few time-series observations. The command executes three different testing procedures—namely, Friedman's ( Journal of the American Statistical Association 32: 675–701) (FR) test statistic, the statistic proposed by Frees ( Journal of Econometrics 69: 393–414), and the cross-sectional dependence (CD) test of Pe-saran ( General diagnostic tests for cross-section dependence in panels University of Cambridge, Faculty of Economics, Cambridge Working Papers in Economics, Paper No. 0435). We illustrate the command with an empirical example.
Hoyos et al. (Wed,) studied this question.
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