Comparison of Nationwide Volumes for Five Major Gastrointestinal Surgical Procedures in Japan: Implications From Publicly Available NCD and NDB Open Data
Atomu Kiriyama, Masakazu Fujii, Toshimichi Asano, Satoshi Hirano · 2026
Read Comparison of Nationwide Volumes for Five Major Gastrointestinal Surgical Procedures in Japan: Implications From Publicly Available NCD and NDB Open Data by Atomu Kiriyama, Masakazu Fujii, Toshimichi Asano, Satoshi Hirano (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13572092.txt.
Description
Atomu Kiriyama and co-authors check whether Japan's two national surgical databases tell the same story, in a 2026 study. One database is a registry surgeons fill in themselves; the other is built from insurance claims. Both are used to track national operation volumes, but nobody had compared them head to head. The team pulled public figures for 2014 to 2023 covering five major gut operations.
The operations were gallbladder removal, hernia repair, appendix removal, and bowel and stomach cancer surgery. Three checks were applied: the ratio between the two counts, the correlation of yearly totals, and whether both agreed on the direction of yearly change. The clinician registry generally reported more cases than the claims data. The comparison tells researchers which source to trust for which question, and where the two systems diverge.
Catalog record
| CREATOR | Atomu Kiriyama, Masakazu Fujii, Toshimichi Asano, Satoshi Hirano |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 25 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |