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Table 1 Type I error rate of various statistics

From: Two-stage analysis strategy for identifying the IgM quantitative trait locus

   α = 0.05 α = 0.01
π 1 Statistics Reverse normal Fisher Reverse normal Fisher
1 T 2 0.032 0.032 0.010 0.010
  Wilcoxon 0.044 0.044 0.010 0.010
0.3 T2, T2 a 0.054 0.072 0.012 0.020
  Wilcoxon, Wilcoxon 0.050 0.054 0.010 0.014
  Adaptive 1b 0.050 0.054 0.010 0.014
  Adaptive 2c 0.056 0.048 0.014 0.01
0.5 T2, T2 a 0.046 0.046 0.008 0.010
  Wilcoxon, Wilcoxon 0.052 0.048 0.014 0.012
  Adaptive 1b 0.052 0.048 0.014 0.012
  Adaptive 2c 0.042 0.032 0.014 0.016
  1. aThe two statistics are those used at the first and second stages, respectively.
  2. bThe prespecified statistic used for the exploratory stage is Wilcoxon.
  3. cThe prespecified statistic used for the exploratory stage is T2.