A simple point-based risk score using 12 preprocedural risk factors accurately predicted long-term mortality after PCI, with C statistics of 0.787, 0.785, and 0.773 at 1, 3, and 5 years.
Observational (n=11,897)
Sí
Can a simple risk score using preprocedural risk factors accurately predict long-term mortality in patients undergoing PCI?
A newly developed simple risk score using 12 preprocedural risk factors can accurately predict 1-, 3-, and 5-year mortality after PCI.
BACKGROUND: A simple risk score to predict long-term mortality after percutaneous coronary intervention (PCI) using preprocedural risk factors is currently not available. In this study, we created one by simplifying the results of a Cox proportional hazards model. METHODS AND RESULTS: A total of 11,897 patients who underwent PCI from October through December 2003 in New York State were randomly divided into derivation and validation samples. Patients' vital statuses were tracked using the National Death Index through the end of 2008. A Cox proportional hazards model was fit to predict death after PCI using the derivation sample, and a simplified risk score was created. The Cox model identified 12 separate risk factors for mortality including older age, extreme body mass indexes, multivessel disease, a lower ejection fraction, unstable hemodynamic state or shock, several comorbidities (cerebrovascular disease, peripheral vascular disease, congestive heart failure, chronic obstructive pulmonary disease, diabetes mellitus, and renal failure), and a history of coronary artery bypass graft surgery. The C statistics of this model when applied to the validation sample were 0.787, 0.785, and 0.773 for risks of death within 1, 3, and 5 years after PCI, respectively. In addition, the point-based risk score demonstrated good agreement between patients' observed and predicted risks of death. CONCLUSIONS: A simple risk score created from a more complicated Cox proportional hazards model can be used to accurately predict a patient's risk of long-term mortality after PCI.
Wu et al. (Wed,) conducted a observational in Percutaneous coronary intervention (n=11,897). Preprocedural risk score was evaluated on Death within 1, 3, and 5 years after PCI. A simple point-based risk score using 12 preprocedural risk factors accurately predicted long-term mortality after PCI, with C statistics of 0.787, 0.785, and 0.773 at 1, 3, and 5 years.
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