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I Just Ran a Thousand Analyses: Benefits of Multiple Testing in Understanding Equivocal Evidence on Gene-Environment Interactions

Author

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  • Vera E Heininga
  • Albertine J Oldehinkel
  • René Veenstra
  • Esther Nederhof

Abstract

Background: In psychiatric genetics research, the volume of ambivalent findings on gene-environment interactions (G x E) is growing at an accelerating pace. In response to the surging suspicions of systematic distortion, we challenge the notion of chance capitalization as a possible contributor. Beyond qualifying multiple testing as a mere methodological issue that, if uncorrected, leads to chance capitalization, we advance towards illustrating the potential benefits of multiple tests in understanding equivocal evidence in genetics literature. Method: We focused on the interaction between the serotonin-transporter-linked promotor region (5-HTTLPR) and childhood adversities with regard to depression. After testing 2160 interactions with all relevant measures available within the Dutch population study of adolescents TRAILS, we calculated percentages of significant (p

Suggested Citation

  • Vera E Heininga & Albertine J Oldehinkel & René Veenstra & Esther Nederhof, 2015. "I Just Ran a Thousand Analyses: Benefits of Multiple Testing in Understanding Equivocal Evidence on Gene-Environment Interactions," PLOS ONE, Public Library of Science, vol. 10(5), pages 1-16, May.
    • Handle: RePEc:plo:pone00:0125383
    DOI: 10.1371/journal.pone.0125383
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