Department of Vascular Surgery, St. Olavs Hospital, Trondheim, Norway.
Department of Vascular Surgery, Pecs University Medical Centre, Pecs, Hungary.
Eur J Vasc Endovasc Surg. 2019 Oct;58(4):609-613. doi: 10.1016/j.ejvs.2019.04.008. Epub 2019 Aug 21.
Vascunet has previously published an international comparison of registry data within vascular surgery. Data validity and completeness in participating registries is essential for a meaningful interpretation of differences between countries. The Vascunet collaboration has therefore developed a methodology for validation of international vascular registry data, previously used for validation of two national registries. This study aimed to assess the internal and external validity of the Danish vascular registry, Karbase, by independent Vascunet validators.
Three of seven hospitals performing vascular surgery, covering 51% of carotid operations and 78% of abdominal aortic aneurysm (AAA) repairs in Denmark in 2016, were visited by two international validators. Independent evaluation was performed of carotid endarterectomy and AAA repair. Local administrative data were compared with Karbase registry data. External validation compared the numbers of cases in these two systems of data collection. Internal validation compared data accuracy and completeness with individual patient records.
Hospital administrative data identified 227/231 carotid and 522/576 abdominal aortic aneurysm (AAA) procedures, whereas Karbase identified 230/231 carotid and 567/576 AAAs. External validity was 99.6% for carotids and 98.4% for AAAs. In internal validation, 1.0% of variables were missing in hospital data whereas 1.7% were missing in Karbase. Data contained within the data fields of Karbase and hospital data were the same in 95.2% (95% CI 91.6-98.8%) for carotids and 97.4% (95% CI 95.4-98.8%) for AAAs.
This study used the Vascunet template for international validation of registry data and demonstrated that Karbase is a reliable system of quality data collection for Danish vascular surgery, especially regarding endpoints. Data quality in the Karbase registry was clearly superior to local administrative data.
Vascunet 此前曾发布过血管外科登记数据的国际比较。参与登记的数据有效性和完整性对于理解国家间的差异至关重要。因此，Vascunet 合作组织制定了一种方法，用于验证国际血管登记数据，该方法之前曾用于验证两个国家的登记数据。本研究旨在通过独立的 Vascunet 验证者评估丹麦血管登记处 Karbase 的内部和外部有效性。
2016 年，丹麦有 7 家进行血管手术的医院中的 3 家，覆盖了颈动脉手术的 51%和腹主动脉瘤（AAA）修复的 78%，由两名国际验证者进行了访问。对颈动脉内膜切除术和 AAA 修复进行了独立评估。将当地行政数据与 Karbase 登记处数据进行了比较。外部验证比较了这两个数据收集系统中的病例数量。内部验证比较了数据准确性和完整性与个体患者记录。
医院行政数据确定了 227/231 例颈动脉和 522/576 例腹主动脉瘤（AAA）手术，而 Karbase 确定了 230/231 例颈动脉和 567/576 例 AAA。颈动脉的外部有效性为 99.6%，AAA 为 98.4%。在内部验证中，医院数据中有 1.0%的变量缺失，而 Karbase 中有 1.7%的变量缺失。Karbase 和医院数据的数据字段中包含的相同数据在颈动脉中占 95.2%（95%CI 91.6-98.8%），在 AAA 中占 97.4%（95%CI 95.4-98.8%）。
本研究使用 Vascunet 模板对登记数据进行了国际验证，并表明 Karbase 是丹麦血管外科可靠的质量数据收集系统，尤其是在终点方面。Karbase 登记处的数据质量明显优于当地行政数据。
