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• W2048993934 startingPage "1378" @default.
• W2048993934 abstract "Objective: To assess the performance of published risk prediction models in common use in adult critical care in the United Kingdom and to recalibrate these models in a large representative database of critical care admissions. Design: Prospective cohort study. Setting: A total of 163 adult general critical care units in England, Wales, and Northern Ireland, during the period of December 1995 to August 2003. Patients: A total of 231,930 admissions, of which 141,106 met inclusion criteria and had sufficient data recorded for all risk prediction models. Interventions: None. Measurements and Main Results: The published versions of the Acute Physiology and Chronic Health Evaluation (APACHE) II, APACHE II UK, APACHE III, Simplified Acute Physiology Score (SAPS) II, and Mortality Probability Models (MPM) II were evaluated for discrimination and calibration by means of a combination of appropriate statistical measures recommended by an expert steering committee. All models showed good discrimination (the c index varied from 0.803 to 0.832) but imperfect calibration. Recalibration of the models, which was performed by both the Cox method and re-estimating coefficients, led to improved discrimination and calibration, although all models still showed significant departures from perfect calibration. Conclusions: Risk prediction models developed in another country require validation and recalibration before being used to provide risk-adjusted outcomes within a new country setting. Periodic reassessment is beneficial to ensure calibration is maintained." @default.
• W2048993934 created "2016-06-24" @default.
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• W2048993934 date "2006-05-01" @default.
• W2048993934 modified "2023-10-06" @default.
• W2048993934 title "Recalibration of risk prediction models in a large multicenter cohort of admissions to adult, general critical care units in the United Kingdom*" @default.
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• W2048993934 doi "https://doi.org/10.1097/01.ccm.0000216702.94014.75" @default.
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