Background:The Japan Cardiovascular Surgery Database (JCVSD) is a nationwide registry of patients undergoing cardiovascular surgery in Japan. To investigate and improve data quality, we have been conducting on-site institutional audits since 2004. This study aimed to investigate the accuracy of the registered data by comparing it to site visit data.

Methods and Results:The subjects of this study were the 95 facilities at which a site visit was conducted. The case registration accuracy was 98.74%. Furthermore, we confirmed high data input accuracy of >90% for almost all fields. Approximately 99% of cases had been correctly entered for diabetes, aortic stenosis, and mortality. We also discovered which fields were more likely to be incorrectly captured and the causes thereof, as well as problems regarding some definitions and the input system itself.

Conclusions:We were able to confirm high registration accuracy in the JCVSD. Appropriately resourced, focused site visits as part of a national audit are capable of accurate data collection on which continual nationwide quality control can be based. Continued work and development to further improve the quality of the database are mandatory to maintain a high standard of cardiovascular surgery in Japan.

背景：日本心血管外科数据库 (JCVSD) 是一个全国性的日本心血管外科患者登记系统。为了调查和提高数据质量，我们自 2004 年以来一直在进行现场机构审计。本研究旨在通过将注册数据与现场访问数据进行比较来调查注册数据的准确性。

方法和结果：本研究的对象是进行现场访问的 95 个设施。病例登记准确率为98.74%。此外，我们确认了几乎所有领域的数据输入准确率 > 90%。大约 99% 的病例已正确输入糖尿病、主动脉瓣狭窄和死亡率。我们还发现了哪些字段更容易被错误捕获及其原因，以及一些定义和输入系统本身的问题。

结论：我们能够确认 JCVSD 中的高配准准确性。作为国家审计的一部分，资源充足、重点突出的现场访问能够收集准确的数据，以此为基础进行持续的全国质量控制。继续努力和开发以进一步提高数据库的质量是维持日本心血管外科高标准的必要条件。