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JAMA. 1993 Dec 22-29;270(24):2957-63.

A new Simplified Acute Physiology Score (SAPS II) based on a European/North American multicenter study.

Author information

  • 1Faculty of Medicine Lariboisière-Saint-Louis, Paris, France.

Erratum in

  • JAMA 1994 May 4;271(17):1321.

Abstract

OBJECTIVE:

To develop and validate a new Simplified Acute Physiology Score, the SAPS II, from a large sample of surgical and medical patients, and to provide a method to convert the score to a probability of hospital mortality.

DESIGN AND SETTING:

The SAPS II and the probability of hospital mortality were developed and validated using data from consecutive admissions to 137 adult medical and/or surgical intensive care units in 12 countries.

PATIENTS:

The 13,152 patients were randomly divided into developmental (65%) and validation (35%) samples. Patients younger than 18 years, burn patients, coronary care patients, and cardiac surgery patients were excluded.

OUTCOME MEASURE:

Vital status at hospital discharge.

RESULTS:

The SAPS II includes only 17 variables: 12 physiology variables, age, type of admission (scheduled surgical, unscheduled surgical, or medical), and three underlying disease variables (acquired immunodeficiency syndrome, metastatic cancer, and hematologic malignancy). Goodness-of-fit tests indicated that the model performed well in the developmental sample and validated well in an independent sample of patients (P = .883 and P = .104 in the developmental and validation samples, respectively). The area under the receiver operating characteristic curve was 0.88 in the developmental sample and 0.86 in the validation sample.

CONCLUSION:

The SAPS II, based on a large international sample of patients, provides an estimate of the risk of death without having to specify a primary diagnosis. This is a starting point for future evaluation of the efficiency of intensive care units.

PMID:
8254858
[PubMed - indexed for MEDLINE]
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