Analysis by Categorizing or Dichotomizing Continuous Variables Is Inadvisable: An Example from the Natural History of Unruptured Aneurysms
نویسندگان
چکیده
منابع مشابه
Analysis by categorizing or dichotomizing continuous variables is inadvisable: an example from the natural history of unruptured aneurysms.
In medical research analyses, continuous variables are often converted into categoric variables by grouping values into ≥2 categories. The simplicity achieved by creating ≥2 artificial groups has a cost: Grouping may create rather than avoid problems. In particular, dichotomization leads to a considerable loss of power and incomplete correction for confounding factors. The use of data-derived "...
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ژورنال
عنوان ژورنال: American Journal of Neuroradiology
سال: 2011
ISSN: 0195-6108,1936-959X
DOI: 10.3174/ajnr.a2425