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HOME > Acute Crit Care > Volume 13(1); 1998 > Article
Original Article Statistical Analysis of the Patients in the ICU by Using the APACHE II Scoring System
Young Joo Lee, Keum Hee Chung, Hyun Jue Gill, Kyung Jin Lee, Sang Hyun Kim, Chang Whan Cho, Young Suk Lee

1Department of Anesthesiology, Ajou university School of Medicine, Suwon, Korea.
2Department of Anesthesiology, Pochun Medical College, Korea.
3Department of General Surgery, Yonsei University College of Medicine, Seoul, Korea.
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Introduction: The APACHE II scoring system has been promulgated as a useful tool in the assessment of the severity of disease and prognosis for patients with acute-on-chronic medical conditions. The purpose of this study was to assess the statistical association of APACHE II score and multiple variables in ICU patients.
Prospective data on 803 ICU patients for validation of the APACHE II system were analysed. We evaluated the relationship between APACHE II scores within the first 24 hours of ICU admission and multiple variables that included days in the ICU, mortality rate and age. The patients were classified as operation and nonoperation, survival and nonsurvival groups.
1) The APACHE II score was significantly higher in the 153 nonsurvivals (23.97+/-10.98) than in the 651 survivals (11.51+/-6.14) (p<0.05). 2) The mean APACHE II score of the nonoperation group (14.52+/-9.29) was significantly higher than operation group (12.40+/-7.30) (p<0.05). 3) The overall mortality rate was 17.8%. 4) All patients with an APACHE II score over 40 died.
The APACHE II score is statistically related with the mortality of critically ill patients.

ACC : Acute and Critical Care