The first Latin-American risk stratification system for cardiac surgery: can be used as a graphic pocket-card score

Autor: Sharif Al-Ruzzeh, Hugo Grancelli, Victorio C. Carosella, Carlos Nojek, César Cárdenas, Jose L. Navia, Walter Rodriguez, Jorge Bilbao
Rok vydání: 2009
Předmět:
Zdroj: Interactive CardioVascular and Thoracic Surgery. 9:203-208
ISSN: 1569-9293
DOI: 10.1510/icvts.2008.199083
Popis: This study aims to develop the first Latin-American risk model that can be used as a simple, pocket-card graphic score at bedside. The risk model was developed on 2903 patients who underwent cardiac surgery at the Spanish Hospital of Buenos Aires, Argentina, between June 1994 and December 1999. Internal validation was performed on 708 patients between January 2000 and June 2001 at the same center. External validation was performed on 1087 patients between February 2000 and January 2007 at three other centers in Argentina. In the development dataset the area under receiver operating characteristics (ROC) curve was 0.73 and the Hosmer-Lemeshow (HL) test was P=0.88. In the internal validation ROC curve was 0.77. In the external validation ROC curve was 0.81, but imperfect calibration was detected because the observed in-hospital mortality (3.96%) was significantly lower than the development dataset (8.20%) (P
Databáze: OpenAIRE