Two clinical decision rules (CDRs) for pulmonaryembolism (PE) are the most widely used in dailypractice, the Wells rule (WR) and the revised Genevascore (RGS).1,2 Although both CDRs rely on clinicalindicators to calculate a patient’s probability for PE, thelatter uses only objective criteria, whereas the formeralso uses clinician judgment. Simplified versions of theseCDRs have emerged: the simplified Wells criteria(SWR) and the simplified revised Geneva score(SRGS).3,4 Paired head-to-head comparisons have beenpublished.
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