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http://dx.doi.org/10.5762/KAIS.2011.12.6.2668

A study on the variation of severity adjusted LOS on Injry inpatient in Korea  

Kim, Sung-Soo (Dept. of Medical Information Management, Asan Medical Center)
Kim, Won-Joong (Dept. of Health Policy & Management, InJe University)
Kang, Sung-Hong (Dept. of Health Policy & Management, InJe University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.6, 2011 , pp. 2668-2676 More about this Journal
Abstract
In order to analyze the variation in length of stay(LOS) of injury inpatients, we developed severity-adjusted LOS model using Korean National Discharge In-depth Injury Survey data of Center for Disease Control. Appling this model, we calculated predicted values and, after standardizing LOS using the differences from the actual values, analyzed the variation in LOS. Major factors affecting severity-adjusted LOS of injury inpatients were found to be severity, surgery(or no surgery), age, injury mechanism and channel of hospitalization. Result of analysis of the differences between the actual values and predicted values adjusted by decision tree model suggested that there were statistically significant differences by hospital size(number of beds), type of insurance and location of institution. In order to reduce the variation in LOS, efforts should be exerted in developing nationwide treatment protocol, inducing medical institutions to utilize it, and furthermore systematically evaluating it to reduce the variation continually.
Keywords
Injury inpatients; Length of stay; Severity-adjustment; Data mining; Decision tree;
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Times Cited By KSCI : 6  (Citation Analysis)
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