Centre for Evidence-Based Medicine (Oxford, UK). CATmaker is a computer-assisted critical appraisal tool. The full version (3MB, PC) is now free. It provides guided appraisal and calculations for therapy, diagnosis, prognosis, etc
Fundamental tools for teaching and understanding how to apply the medical literature to clinical decisions. Includes online version of the Users' Guide to the Medical Literature (2015) and The Rational Clinical Examination (2009).