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Development of Severity-Adjustment Model for Length of Stay in Hospital for Percutaneous Coronary Interventions

관상동맥중재술 환자의 재원일수 중증도 보정 모형 개발

  • 남문희 (가야대학교 간호학과) ;
  • 강성홍 (인제대학교 보건행정학과) ;
  • 임지혜 (동주대학 보건의료행정과)
  • Received : 2011.03.28
  • Accepted : 2011.08.16
  • Published : 2011.09.28

Abstract

Our study was carried out to develop the severity-adjustment model for length of stay in hospital for percutaneous coronary interventions so that we would analysis the factors on the variation in length of stay(LOS). The subjects were 1,011 percutaneous coronary interventions inpatients of the Korean National Hospital Discharge In-depth Injury Survey 2004-2006 data. The data were analyzed using t-test and ANOVA and the severity-adjustment model was developed using data mining technique. After yielding the standardized value of the difference between crude and expected length of stay, we analysed the variation of length of stay for percutaneous coronary interventions. There was variation of LOS in regional differences, size of sickbed and insurance type. The variation of length of stay controlling the case mix or severity of illness can be explained the factors of provider. This supply factors in LOS variations should be more studied for individual practice style or patient management practices and healthcare resources or environment. We expect that the severity-adjustment model using administrative databases should be more adapted in other diseases in practical.

Keywords

Percutaneous Coronary Interventions;Length of Stay;Severity-Adjustment;Regional Geographic Vvariation;Data Mining

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