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Related link : Sample Size for McNemar Test of Paired Changes in Proportions Explanation and Table Page

Power Estimation : The data is in 4 columns. - Each row a separate study - Col 1 = probability of Type I error (α) - Col 2 = sample size used (number of pairs) - Col 3 = observed proportion of total that switched from + to - - Col 4 = observed proportion of total that switched from - to +