The accuracy of Japanese claims data in identifying breast cancer cases

Biological & Pharmaceutical Bulletin
Izumi SatoYasuo Ohashi

Abstract

In use of a claims database for a study, an inaccurate diagnosis of breast cancer based on claims data may lead to invalid study results. The aim of this study was to assess the accuracy of definitions for identifying breast cancer cases from the Japanese claims database. The study cohort consisted of women with no prior cancer-related history, from the claims data at a single institution between January 1 and December 31, 2011. We developed 14 definitions for identifying breast cancer based on claims data, using a combination of diagnosis codes and treatment procedure codes. We calculated the sensitivity, specificity, and positive predictive value (PPV) of each definition, compared to cases identified from the standardized hospital-based cancer registry as a standard reference. A total of 50056 women were included in the study cohort from the claims database. We identified 633 breast cancer cases from the cancer registry. Of 14 definitions, 12 exhibited higher sensitivity than 90%, while the others exhibited lower sensitivity than 40%. The specificities of all definitions were high (≥ 99%), and the PPVs were between 65.8 and 90.7%. We selected the most optimal definition obtained from combinations of diagnosis and cancer treat...Continue Reading

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Citations

Jul 20, 2018·Pharmacoepidemiology and Drug Safety·Nana KoramCynthia de Luise
Nov 25, 2017·Cancer Research and Treatment : Official Journal of Korean Cancer Association·Seulggie ChoiKiheon Lee
Dec 14, 2018·Nihon Ronen Igakkai zasshi. Japanese journal of geriatrics·Seigo MitsutakeHideki Ito
Nov 29, 2020·Drug Safety : an International Journal of Medical Toxicology and Drug Experience·Masao IwagamiHideo Yasunaga
Feb 6, 2021·International Journal of Epidemiology·Toru NaganumaUNKNOWN Sukagawa Study Group
Dec 29, 2020·The Journal of Clinical Hypertension·Daisuke ShimaKazuomi Kario
Feb 26, 2021·Pharmacoepidemiology and Drug Safety·Kazuya FujiharaHirohito Sone
Mar 20, 2021·Circulation Reports·Michikazu NakaiUNKNOWN on the behalf of the JROAD Investigators
Apr 24, 2021·BMC Musculoskeletal Disorders·Kiyoshi KubotaHitoshi Kohsaka
May 8, 2021·Pharmacoepidemiology and Drug Safety·Cynthia de LuiseSoko Setoguchi
Jun 21, 2021·Drugs -- Real World Outcomes·Katsutoshi HiramatsuUNKNOWN PhRMA Japan Medical Affairs Committee Working Group 1

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