Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/25083
Authors: 
Ulbricht, Niels
Weiner, Christian
Year of Publication: 
2005
Series/Report no.: 
SFB 649 discussion paper 2005,064
Abstract: 
With this study we are the first to systematically compare today's two major counterparts as a source of accounting and financial data for researchers: Compustat North America by Standard & Poor's and Worldscope by Thomson Financial. This investigation is conducted for U.S. and partly Canadian data over an extensive period from 1985 to 2003. We examine more than 650 data items available in both databases and address the question of whether or not the decision for one or the other source may have an impact on the outcome of research projects. It is probably commonly assumed that this impact is minor, but it also leaves room to question certain results. We show that the use of both databases should lead to comparable results, but also find that if, e.g. a size bias, is not treated with care the quality of results may differ considerable. Furthermore after 1998 the number of firms covered by Worldscope exceeds the one covered by Compustat by about one fourth.
Document Type: 
Working Paper

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