Verification of Data Accuracy in Japan Congenital Cardiovascular Surgery Database Including Its Postprocedural Complication Reports

Arata Takahashi, Hiraku Kumamaru, Ai Tomotaki, Goki Matsumura, Eriko Fukuchi, Yasutaka Hirata, Arata Murakami, Hideki Hashimoto, Minoru Ono, Hiroaki Miyata

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Background: Japan Congenital Cardiovascluar Surgical Database (JCCVSD) is a nationwide registry whose data are used for health quality assessment and clinical research in Japan. We evaluated the completeness of case registration and the accuracy of recorded data components including postprocedural mortality and complications in the database via on-site data adjudication. Methods: We validated the records from JCCVSD 2010 to 2012 containing congenital cardiovascular surgery data performed in 111 facilities throughout Japan. We randomly chose nine facilities for site visit by the auditor team and conducted on-site data adjudication. We assessed whether the records in JCCVSD matched the data in the source materials. Results: We identified 1,928 cases of eligible surgeries performed at the facilities, of which 1,910 were registered (99.1% completeness), with 6 cases of duplication and 1 inappropriate case registration. Data components including gender, age, and surgery time (hours) were highly accurate with 98% to 100% concordance. Mortality at discharge and at 30 and 90 postoperative days was 100% accurate. Among the five complications studied, reoperation was the most frequently observed, with 16 and 21 cases recorded in the database and source materials, respectively, having a sensitivity of 0.67 and a specificity of 0.99. Conclusions: Validation of JCCVSD database showed high registration completeness and high accuracy especially in the categorical data components. Adjudicated mortality was 100% accurate. While limited in numbers, the recorded cases of postoperative complications all had high specificities but had lower sensitivity (0.67-1.00). Continued activities for data quality improvement and assessment are necessary for optimizing the utility of these registries.

Original languageEnglish
Pages (from-to)150-156
Number of pages7
JournalWorld Journal for Pediatric and Congenital Heart Surgery
Issue number2
Publication statusPublished - 2018 Mar 1


  • complications
  • congenital heart surgery
  • registry
  • validation

ASJC Scopus subject areas

  • Surgery
  • Pediatrics, Perinatology, and Child Health
  • Cardiology and Cardiovascular Medicine


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