Comparison of SAPS III and SOFA score for the prediction of mortality among ICU patients.

Abstract

Background: The present study was designed to assess the comparative performance of the Simplified Acute Physiology Score III (SAPS III) and sequential organ failure assessment (SOFA) score in predicting mortality among critically ill ICU patients. Methodology: A cross-sectional study was conducted from January 2019 to December 2019, including 162 patients admitted to the medical intensive care unit (ICU) of PIMS, Islamabad. The SOFA and SAPS III scores were calculated for all patients on admission. Outcome parameters included death or discharge from the hospital and disability. The receiver operating characteristic (ROC) curve was constructed for the studied models, and the scores were correlated with mortality. Results: The overall mortality rate in the studied population was 46.9%. The mean SAPS III and SOFA scores were 55.26±18.46 and 14.41±5.67, respectively. The area under the ROC curve (aROC) for the SAPS III was 0.71 at a cut-off value of 43.5, whereas the aROC for SOFA was 0.64 at a cut-off score of 12.5. The ROC curve for predicting hospital mortality exhibited that both SAPS III and SOFA scores were sensitive predictors of mortality, given SAPS III had relatively better prediction (85%) compared to SOFA (76%). Conclusion: It is concluded that SAPS III and SOFA scores are sensitive predictors of mortality; however, SAPs score is better at predicting mortality than SOFA score.

Keywords

• simplified acute physiology score iii (saps iii) and sequential organ failure assessment (sofa) score
• icu
• mortality