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Table 1 Power and empirical type I error rate for given α = 0.05

From: Retrospective analysis of main and interaction effects in genetic association studies of human complex traits

Sample size Power Type I error
  β3 = -0.65 β3 = -0.95 β3 = -1.20 β3 = 0
150 0.348 0.642 0.780 0.052
200 0.540 0.668 0.894 0.048
250 0.604 0.852 0.898 0.054
300 0.664 0.884 0.960 0.046
400 0.760 0.948 1.000 0.050
600 0.876 1.000 1.000 0.052