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Research ArticleResearch Perspectives
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Analysis by Categorizing or Dichotomizing Continuous Variables Is Inadvisable: An Example from the Natural History of Unruptured Aneurysms

O. Naggara, J. Raymond, F. Guilbert, D. Roy, A. Weill and D.G. Altman
American Journal of Neuroradiology March 2011, 32 (3) 437-440; DOI: https://doi.org/10.3174/ajnr.A2425
O. Naggara
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J. Raymond
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F. Guilbert
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D. Roy
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A. Weill
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Tables

  • Five-year aneurysm cumulative rupture ratea

    Aneurysms <7 mmAneurysms 7–12 mmAneurysms 13–24 mmAneurysms >25 mm
    Group 1bGroup 2c
    ACA/MCA/ICA01.5%2.6%14.5%40%
    Pcirc/PcomA2.5%3.4%14.5%18.4%50%
    • a Data from Wiebers et al.7

    • b Patients who had no prior history of aneurysmal SAH.

    • c Patients who had a prior history of aneurysmal SAH.

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American Journal of Neuroradiology: 32 (3)
American Journal of Neuroradiology
Vol. 32, Issue 3
1 Mar 2011
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O. Naggara, J. Raymond, F. Guilbert, D. Roy, A. Weill, D.G. Altman
Analysis by Categorizing or Dichotomizing Continuous Variables Is Inadvisable: An Example from the Natural History of Unruptured Aneurysms
American Journal of Neuroradiology Mar 2011, 32 (3) 437-440; DOI: 10.3174/ajnr.A2425

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Analysis by Categorizing or Dichotomizing Continuous Variables Is Inadvisable: An Example from the Natural History of Unruptured Aneurysms
O. Naggara, J. Raymond, F. Guilbert, D. Roy, A. Weill, D.G. Altman
American Journal of Neuroradiology Mar 2011, 32 (3) 437-440; DOI: 10.3174/ajnr.A2425
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