Trujillano, Javier Stratification of the severity of critically ill patients with classification trees. [electronic resource] - BMC medical research methodology Dec 2009 - 83 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1471-2288 Standard No.: 10.1186/1471-2288-9-83 doi Subjects--Topical Terms: APACHEAgedChi-Square DistributionCritical Illness--classificationData Interpretation, StatisticalDecision TreesDiagnosis-Related Groups--statistics & numerical dataFemaleGlasgow Outcome ScaleHospital MortalityHumansLogistic ModelsMaleMiddle AgedROC CurveRetrospective StudiesSeverity of Illness Index