Abstract
Background
No prediction scores for the mortality of both inpatients and outpatients who developed nonvariceal upper gastrointestinal bleeding (UGIB) without endoscopic findings have been established. We aimed to derive and validate a novel prediction score for in-hospital mortality.
Methods
We conducted a three-stage, multicenter retrospective study. In the derivation stage, patients with nonvariceal UGIB at six institutions were enrolled to derive the prediction score by logistic regression analysis. External validation of the score was performed to analyze discrimination by patients at six other institutions. Then the performance of this score was compared with that of four existing scores.
Results
We enrolled 1380 and 825 patients in the derivation and validation cohorts, respectively. A prediction score (CHAMPS-R Score) comprising seven variables (Charlson Comorbidity Index ≥ 2, in-hospital onset, albumin < 2.5 g/dL, altered mental status, Eastern Cooperative Oncology Group performance status ≥ 2, steroids, and rebleeding) with equal-weight scores was established, with high discriminative ability in both derivation and validation cohorts (c statistic, 0.91 and 0.80, respectively). When rebeeding was excluded from the score (an onset model; CHAMPS Score), this score also achieved high discriminative ability (c statistic, 0.90 and 0.81, respectively). The prediction scores had significantly higher discriminative ability than the Glasgow Blatchford Score, AIMS65, ABC Score, and clinical Rockall Score in both cohorts (all, p < 0.05).
Conclusions
We derived and externally validated prediction scores for in-hospital mortality in patients with nonvariceal UGIB. The CHAMPS Score might be optimal for managing such patients. Its mobile application is freely available (https://apps.apple.com/app/id1565716902 for iOS and https://play.google.com/store/apps/details?id=hatta.CHAMPS for Android).
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Abbreviations
- UGIB:
-
Upper gastrointestinal bleeding
- GBS:
-
Glasgow Blatchford Score
- ECOG-PS:
-
Eastern Cooperative Oncology Group performance status
- CCI:
-
Charlson Comorbidity Index
- IQR:
-
Interquartile range
- VIF:
-
Variance inflation factor
- PPV:
-
Positive predictive value
- NPV:
-
Negative predictive value
- CI:
-
Confidence interval
- BP:
-
Blood pressure
- NSAIDs:
-
Nonsteroidal anti-inflammatory drugs
- OR:
-
Odds ratio
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Acknowledgements
We thank Kenichi Negoro (Tohoku University Graduate School of Medicine) for his contribution to developing a mobile application for the CHAMPS Score. We also thank Naoki Nakaya (Tohoku Medical Megabank Organization) for his insightful comments and advice for statistical analyses in this study.
Funding
The current study was self-funded.
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Conception and design: WH and KI. Acquisition of data: TM, WH, TH, SF, TM, TT, JN, YA, YO, MO, HI, NH, YA, TY, HI, TT, KS, YH, SO, YK, and TD. Analysis and interpretation of data: TM, WH, and KI. Drafting of the manuscript: WH. Critical revision of the manuscript: AM, TN, and KI. Statistical analysis: WH and YO. Development of a mobile application: WH and YK. Study supervision: KI. All authors listed have contributed substantially to the design, data collection and analysis, and editing of the manuscript.
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Atsushi Masamune declared that he received lecture honoraria from EA Pharma Co. Ltd., Takeda Pharmaceutical Co. Ltd., Daiichi Sankyo, Inc., and Mylan.co.jp and he received commercial research funding from Otsuka Pharmaceutical Co. Ltd., EA Pharma Co. Ltd., Gilead Sciences, Inc., Asahi Kasei Pharma Corp., Eisai Co. Ltd., AbbVie GK, Takeda Pharmaceutical Co. Ltd., and Daiichi Sankyo, Inc. outside the submitted work.
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Matsuhashi, T., Hatta, W., Hikichi, T. et al. A simple prediction score for in-hospital mortality in patients with nonvariceal upper gastrointestinal bleeding. J Gastroenterol 56, 758–768 (2021). https://doi.org/10.1007/s00535-021-01797-w
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DOI: https://doi.org/10.1007/s00535-021-01797-w