Hjertholm Peter, Flarup Kaare Rud, Guldbrandt Louise Mahncke, Vedsted Peter
Research Center for Cancer Diagnosis in Primary Care, Department of Public Health.
Research Center for Cancer Diagnosis in Primary Care, Department of Public Health; University Clinic for Innovative Health Care Delivery, Diagnostic Centre, Silkeborg Hospital, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Clin Epidemiol. 2017 Mar 6;9:151-156. doi: 10.2147/CLEP.S124091. eCollection 2017.
The aim of this validation study was to assess the completeness of the registrations of chest X-rays (CXR) in two different versions of the Danish National Patient Registry (DNPR).
We included electronic record data on CXR performed on patients aged 40 to 99 years from nine radiology departments covering 20 Danish hospitals. From each department, we included data from three randomly selected weeks between 2004 and 2011 (reference standard). In two versions of the DNPR from the State Serum Institute (SSI) and Statistics Denmark, respectively, we investigated the proportion of registered CXR compared to the reference standard. Furthermore, we compared the completeness of the recorded data according to the responsible department (main department).
We identified 11,235 patients and 12,513 CXR in the reference standard. The data from the SSI contained 12,265 (98%) CXR, whereas the data from Statistics Denmark comprised 9,151 (73.1%) CXR. The completeness of the SSI data was fairly constant across years, radiology departments, medical specialties, and age groups. The data from Statistics Denmark was almost complete in 2011 (95.8%). However, for the remaining study period, the data with radiology departments registered as the main department were lacking in the version from Statistics Denmark, and so the overall completeness was 73.1%.
The completeness of CXR registrations varied between 98% and 73% depending on the information source, and this should be considered when investigating radiology services in the basis of DNPR.
本验证研究旨在评估丹麦国家患者登记处（DNPR）两个不同版本中胸部X光（CXR）登记的完整性。
我们纳入了来自覆盖20家丹麦医院的9个放射科的40至99岁患者的CXR电子记录数据。从每个科室，我们纳入了2004年至2011年期间随机选择的三周的数据（参考标准）。在分别来自国家血清研究所（SSI）和丹麦统计局的两个DNPR版本中，我们调查了与参考标准相比的CXR登记比例。此外，我们根据负责科室（主要科室）比较了记录数据的完整性。
我们在参考标准中识别出11235名患者和12513次CXR。SSI的数据包含12265次（98%）CXR，而丹麦统计局的数据包含9151次（73.1%）CXR。SSI数据的完整性在各年份、放射科、医学专科和年龄组中相当稳定。丹麦统计局的数据在2011年几乎完整（95.8%）。然而，在其余研究期间，丹麦统计局版本中缺少以放射科登记为主要科室的数据，因此总体完整性为73.1%。
根据信息来源不同，CXR登记的完整性在98%至73%之间变化，在基于DNPR调查放射科服务时应考虑这一点。
