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Multiple Testing and Statistical Power With Modified Bonferroni Procedures

Author

Listed:
  • Stephen Olejnik
  • Jianmin Li
  • Suchada Supattathum
  • Carl J. Huberty

Abstract

The difference in statistical power between the original Bonferroni and five modified Bonferroni procedures that control the overall Type I error rate is examined in the context of a correlation matrix where multiple null hypotheses, H 0 : Ï ij = 0 for all i ≠j, are tested. Using 50 real correlation matrices reported in educational and psychological journals, a difference in the number of hypotheses rejected of less than 4% was observed among the procedures. When simulated data were used, very small differences were found among the six procedures in detecting at least one true relationship, but in detecting all true relationships the power of the modified Bonferroni procedures exceeded that of the original Bonferroni procedure by at least .18 and by as much as .55 when all null hypotheses were false. The power difference decreased as the number of true relationships decreased. Power differences obtained for the average power were of a much smaller magnitude but still favored the modified Bonferroni procedures. For the five modified Bonferroni procedures, power differences less than .05 were typically observed; the Holm procedure had the lowest power, and the Rom procedure had the highest.

Suggested Citation

  • Stephen Olejnik & Jianmin Li & Suchada Supattathum & Carl J. Huberty, 1997. "Multiple Testing and Statistical Power With Modified Bonferroni Procedures," Journal of Educational and Behavioral Statistics, , vol. 22(4), pages 389-406, December.
    • Handle: RePEc:sae:jedbes:v:22:y:1997:i:4:p:389-406
    DOI: 10.3102/10769986022004389
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    Cited by:

    1. Kang Guolian & Ye Keying & Liu Nianjun & Allison David B. & Gao Guimin, 2009. "Weighted Multiple Hypothesis Testing Procedures," Statistical Applications in Genetics and Molecular Biology, De Gruyter, vol. 8(1), pages 1-22, April.

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