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

Dichotomization: 2 × 2 (×2 × 2 × 2...) categories: infinite possibilities

(2010) Karyn K Heavner et al.   BMC Medical Research Methodology

Reporting methods in studies developing prognostic models in cancer: a review

(2010) Susan Mallett et al.   BMC Medicine

Prediction models in reproductive medicine: a critical appraisal†

(2009) Esther Leushuis et al.   HUMAN REPRODUCTION UPDATE

Cost-effectiveness of preventive treatment of intracranial aneurysms: New data and uncertainties

(2009) J. P. Greving et al.   NEUROLOGY

Cutpoints in Clinical Chemistry: Time for Fundamental Reassessment

(2008) A. J. Vickers et al.   CLINICAL CHEMISTRY

A systematic review finds methodological improvements necessary for prognostic models in determining traumatic brain injury outcomes

(2008) Nino A. Mushkudiani et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

Natural history of unruptured intracranial aneurysms: probability of and risk factors for aneurysm rupture

(2008) Seppo Juvela et al.   JOURNAL OF NEUROSURGERY

Leave ‘em Alone – Why Continuous Variables Should Be Analyzed as Such

(2008) Carl van Walraven et al.   NEUROEPIDEMIOLOGY

Consequences of dichotomization

(2008) Valerii Fedorov et al.   PHARMACEUTICAL STATISTICS