Data Input for Sample Size is a table of 5 columns     Each row contains data from a separate study     Col 1 = Probability of Type I Error α     Col 2 = Power (1 - β)     Col 3 = Expected Within Group Standard Deviation     Col 4 = Critical Difference, the tolerated limit of difference to be considered trivial     Col 5 = Ratio of sample sizes (ngroup2 / ngroup1) Data Input for Equivalence Analysis is a table of 8 columns     Each row contains data from a separate study     Col 1, 2, and 3 = n, mean, and SD of group 1     Col 4, 5, and 6 = n, mean, and SD of group 2     Col 7 = Probability of Type I Error α     Col 8 = Critical Difference, the tolerated limit of difference to be considered trivial Sample Size :      Analysis :

Machin D, Campbell M, Fayers, P, Pinol A (1997) Sample Size Tables for Clinical Studies. Second Ed. Blackwell Science IBSN 0-86542-870-0 p. 100-102