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Surgery Today
Published in: Surgery Today 1/2019

01-01-2019 | Original Article

Evaluating the quality of data from the Japanese National Clinical Database 2011 via a comparison with regional government report data and medical charts

Authors: Ai Tomotaki, Hiraku Kumamaru, Hideki Hashimoto, Arata Takahashi, Minoru Ono, Tadashi Iwanaka, Hiroaki Miyata

Published in: Surgery Today | Issue 1/2019

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Abstract

Purpose

The aim of this study was to examine the quality of data from the National Clinical Database (NCD) via a comparison with regional government report data and medical charts.

Methods

A total of 1,165,790 surgical cases from 3007 hospitals were registered in the NCD in 2011. To evaluate the NCD’s data coverage, we retrieved regional government report data for specified lung and esophageal surgeries and compared the number with registered cases in the NCD for corresponding procedures. We also randomly selected 21 sites for on-site data verification of eight demographic and surgical data components to assess the accuracy of data entry.

Results

The numbers of patients registered in the NCD and regional government report were 46,143 and 48,716, respectively, for lung surgeries and 7494 and 8399, respectively, for esophageal surgeries, leading to estimated coverages of 94.7% for lung surgeries and 89.2% for esophageal surgeries. According to on-site verification of 609 cases at 18 sites, the overall agreement between the NCD data components and medical charts was 97.8%.

Conclusion

Approximately, 90–95% of the specified lung surgeries and esophageal surgeries performed in Japan were registered in the NCD in 2011. The NCD data were accurate relative to medical charts.
Appendix
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Metadata
Title
Evaluating the quality of data from the Japanese National Clinical Database 2011 via a comparison with regional government report data and medical charts
Authors
Ai Tomotaki
Hiraku Kumamaru
Hideki Hashimoto
Arata Takahashi
Minoru Ono
Tadashi Iwanaka
Hiroaki Miyata
Publication date
01-01-2019
Publisher
Springer Singapore
Published in
Surgery Today / Issue 1/2019
Print ISSN: 0941-1291
Electronic ISSN: 1436-2813
DOI
https://doi.org/10.1007/s00595-018-1700-5

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