Under 'Barnard's Test (Wikipedia) the following reference appear:
Barnard, G.A (1945). "A New Test for 2×2 Tables". Nature 156 (3954): 177.
I have been unable to verify this reference, which also appears in the Manual for StatXact. However, I can find the following reference:
G. A. BARNARD, SIGNIFICANCE TESTS FOR 2x2 TABLES, Biometrika 1947 34: 123-138
Does anybody know about the Nature reference and if in fact the two papers refer to the same unconditional test in 2x2 tables.
Kind Regards
Jorgen
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Jorgen Seldrup, PhD
Senior Director, Centre for Statistics in Drug Development
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