Prognostic factor research
Sample size guidance
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A simple method of sample size calculation for linear and logistic regression (PDF)
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Sample size considerations for the evaluation of prognostic factors in survival analysis (PDF)
Overviews
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Prognosis Research Strategy (PROGRESS) 2: prognostic factor research (PDF)
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Prognostic markers in cancer: the evolution of evidence from single studies to meta-analysis, and beyond (PDF)
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Evidence-Based Assessment and Application of Prognostic Markers: The Long Way from Single Studies to Meta-Analysis (PDF)
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Prognostic Factors - Confusion caused by bad quality of design, analysis and reporting of many studies (PDF)
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Prognostic Factor Studies (PDF)
Analysis guidance
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Statistical aspects of prognostic factor studies in oncology (PDF)
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Dangers of Using “Optimal” Cutpoints in the Evaluation of Prognostic Factors (PDF)
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Dichotomizing continuous predictors in multiple regression: a bad idea (PDF)
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The use of fractional polynomials to model continuous risk variables in epidemiology (PDF)