Fig. 1From: External validation of prognostic rules for early post-pulmonary embolism mortality: assessment of a claims-based and three clinical-based approachesIdentified PE patients and distribution of risk classes. IMPACT = hrs = hours; In-hospital Mortality for Pulmonary embolism using Claims daTa; PE = pulmonary embolism; PESI = Pulmonary Embolism Severity Index; SSDI = social security death index; sPESI = simplified Pulmonary Embolism Severity IndexBack to article page