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A logistic regression model for survival prediction in rats with fixed-volume hemorrhage

Authors
 Nam, Ki Chang  ;  Kwon, Min Kyung  ;  Lee, Da Som  ;  Park, In Cheol  ;  Kim, Deok Won 
Citation
 Advanced Science Letters, Vol.6(15) : 70-74, 2012 
Journal Title
 Advanced Science Letters 
ISSN
 1936-6612 
Issue Date
2012
Abstract
Hemorrhagic shock is a common cause of death in emergency rooms. Because the symptoms of hemorrhagic shock occur after shock has considerably progressed, early diagnosis of shock is difficult. The purpose of this study was to achieve early diagnosis of hemorrhagic shock using a survival prediction model in rats. We allocated 60 Sprague-Dawley rats into four groups: a no hemorrhage group, and three groups with hemorrhage at a fixed volume of 2, 2.5, and 3 mL/100 g. We analyzed heart rate, systolic and diastolic blood pressures, respiration and body temperature, and then obtained a logistic regression equation predicting survival rates between 0 for death and 1 for survival. The area under the receiver operating characteristic (ROC) curves was 0.986. The Hosmer-Lemeshow goodness-of-fit chi-square value for the evaluation of the calibration of the outcome prediction model was 2.69 with 8 degrees of freedom (P = 0.952). The optimal boundary value between survival and death was determined to be 0.37. By applying the optimal boundary, the sensitivity, specificity, and accuracy of survival prediction by the regression equation were 96.8, 95.4, and 96.0%, respectively.
Full Text
http://dx.doi.org/10.1166/asl.2012.2009
DOI
10.5125/jkaoms.2012.38.2.110
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Emergency Medicine (응급의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Deok Won(김덕원)
Nam, Ki Chang(남기창)
Park, In Cheol(박인철) ORCID logo https://orcid.org/0000-0001-7033-766X
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/89390
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