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ATOP Data, v4.01
Last updated: Nov. 2018 Data in STATA format:
Data in CSV format:
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We ask users of the ATOP data to employ the following citation:
Leeds, Brett Ashley, Jeffrey M. Ritter, Sara McLaughlin Mitchell, and Andrew G. Long. 2002. Alliance Treaty Obligations and Provisions, 1815-1944. International Interactions 28: 237-260. ATOP data are available in six basic formats with six different units of analysis: the alliance, the alliance phase, the alliance member, the state-year, the dyad-year, and the directed dyad-year. All six formats and the variables included in each file are explained in detail in the ATOP codebook. In addition, we provide data for the same six units of analysis excluding nonaggression pacts (see page 14 of the ATOP codebook). Version 4.01 corrects three typographical errors in the member numbers in version 4.0. | ||||
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