Impact of hospital volume on clinical outcomes of endoscopic biliary drainage for acute cholangitis based on the Japanese administrative database associated with the diagnosis procedure combination system

Atsuhiko Murata, Shinya Matsuda, Kazuaki Kuwabara, Yoshihisa Fujino, Tatsuhiko Kubo, Kenji Fujimori, Hiromasa Horiguchi

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Background: We aimed to determine the relationship between hospital volume and the clinical outcomes of endoscopic biliary drainage for acute cholangitis, using the Japanese administrative database associated with the diagnosis procedure combination (DPC) system. Methods: A total of 8698 patients with endoscopic biliary drainage were referred to 654 hospitals. We corrected patients' data from the database to compare risk-adjusted length of stay (LOS) and drainage-related complications in relation to the hospital volume. Hospital volume was categorized into three groups based on number of cases during the study period: low-volume hospitals (LVHs; <16 cases), medium-volume hospitals (MVHs; 16-32 cases), and high-volume hospitals (HVHs; >32 cases). Results: Significant variation in mean LOS was observed between hospital volume categories (26.8 ± 22.6 days in LVHs vs. 23.3 ± 21.5 days in MVHs vs. 19.7 ± 17.2 days in HVHs, P < 0.001). There was a significant difference with regard to complications of endoscopic biliary drainage (5.6% in LVHs vs. 4.3% in MVHs vs. 3.2% in HVHs, P < 0.001). Multiple linear regression analysis revealed that hospital volume was most significantly associated with a decrease in risk-adjusted LOS. The standardized coefficient of MVHs was -0.155, whereas that of HVHs was -0.802. Multiple logistic regression analysis showed that hospital volume decreased the relative risk of drainage-related complications. The odds ratio (OR) of MVHs was 0.764 [95% confidence interval (CI), 0.604-0.965], whereas the OR of HVHs was 0.561 (95% CI, 0.434-0.725). Conclusions: There was a significant association between hospital volume and the clinical outcomes of endoscopic biliary drainage for acute cholangitis.

本文言語English
ページ(範囲)1090-1096
ページ数7
ジャーナルJournal of gastroenterology
45
10
DOI
出版ステータスPublished - 2010 10
外部発表はい

ASJC Scopus subject areas

  • 消化器病学

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