Factors Associated with Unplanned Hospital Readmission

서울시 소재 한 대학병원 퇴원환자의 재입원 관련요인

  • Lee, Eun-Whan (Graduate School of Public Health, Yonsei University) ;
  • Yu, Seung-Hum (Graduate School of Public Health, Yonsei University) ;
  • Lee, Hae-Jong (Department of Health Administration, Yonsei University) ;
  • Kim, Suk-Il (Department of Preventive Medicine, The Catholic University of Korea)
  • 이은환 (연세대학교 보건대학원 병원경영학과) ;
  • 유승흠 (연세대학교 보건대학원 병원경영학과) ;
  • 이해종 (연세대학교 보건과학대학 보건행정학과) ;
  • 김석일 (가톨릭대학교 의과대학 예방의학교실)
  • Received : 2010.09.20
  • Accepted : 2010.11.24
  • Published : 2010.12.30


Objective : To determine demographic, clinical, health care utilization factors predicting unplanned readmission(within 28 days) to the hospital. Methods : A case-control study was conducted from January to December 2009. Multiple logistic regression was used to examine risk factors for readmission. 180 patients who had been readmitted within 28 days and 1,784 controls were recruited from an university hospital in Seoul. Results : Six risk factors associated with readmission risk were identified and include mail sex, medical service rather than surgical service, number of comorbid diseases, type of patient's room, lenth of stay, number of admissions in the prior 12 months. Conclusions : One of the association with readmission risk identified was the number of hospital admissions in the previous year. This factor may be the only risk factor necessary for assessing prior risk and has the additional advantage of being easily accessible from computerized medical records without requiring other medical record review. This risk factor may be useful in identifying a group at high readmission risk, which could be targeted in intervention studies. Multiple risk factors intervention approach should be considered in designing future prevention strategies.