Towards evidence based emergency medicine: best BETs from the Manchester Royal Infirmary. Clinical probability scoring and pulmonary embolism.

A short cut review was carried out to establish the diagnostic utility of clinical probability scoring in stratifying the risk of pulmonary embolus. A total of 938 papers were found using the reported search, of which three presented the best evidence to answer the clinical question. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these best papers are tabulated. A clinical bottom line is stated.