Department of Neurology, Førde Central Hospital, Svanehaugvegen 2, 6812, Førde, Norway.
Medical Department, Haraldsplass Deaconess Hospital, Bergen, Norway.
BMC Musculoskelet Disord. 2022 Mar 9;23(1):231. doi: 10.1186/s12891-022-05183-2.
The Norwegian Knee Ligament Register was founded in 2004 to provide representative and reliable data on cruciate ligament surgery. The aim of this study was to evaluate the validity of key variables in the Norwegian Knee Ligament Register to reveal and prevent systematic errors or incompleteness, which can lead to biased reports and study conclusions.
We included a stratified cluster sample of 83 patients that had undergone both primary and revision anterior cruciate ligament surgery. A total of 166 medical records were reviewed and compared with their corresponding data in the database of the Norwegian Knee Ligament Register. We assessed the validity of a selection of key variables using medical records as a reference standard to compute the positive predictive values of the register data for the variables.
The positive predictive values for the variables of primary and revision surgery ranged from 92 to 100% and from 39 to 100% with a mean positive predictive value of 99% and 88% respectively. Data on intraoperative findings and surgical details had high positive predictive values, ranging from 91 to 100% for both primary and revision surgery. The positive predictive value for the variable "date of injury" was 92% for primary surgeries but only 39% for revision surgeries. The positive predictive value for "activity at the time of injury" was 99% for primary surgeries and 52% for revisions.
Overall, the data quality of the key variables examined in the Norwegian Knee Ligament Register was high, making the register a valid source for research.
挪威膝关节韧带注册中心成立于 2004 年，旨在提供有关十字韧带手术的代表性和可靠数据。本研究的目的是评估挪威膝关节韧带注册中心关键变量的有效性，以发现和防止系统误差或不完整，从而导致有偏差的报告和研究结论。
我们纳入了一个分层聚类样本，包括 83 例接受初次和翻修前交叉韧带手术的患者。共审查了 166 份病历，并将其与挪威膝关节韧带注册中心数据库中的相应数据进行了比较。我们使用病历作为参考标准评估了一系列关键变量的有效性，以计算登记数据对这些变量的阳性预测值。
初次和翻修手术的变量的阳性预测值范围分别为 92%至 100%和 39%至 100%，平均阳性预测值分别为 99%和 88%。术中发现和手术细节的数据具有较高的阳性预测值，初次和翻修手术的阳性预测值范围分别为 91%至 100%。“受伤日期”变量的阳性预测值为初次手术的 92%，但翻修手术的仅为 39%。“受伤时的活动”变量的阳性预测值在初次手术中为 99%，在翻修手术中为 52%。
总体而言，挪威膝关节韧带注册中心中检查的关键变量的数据质量较高，使该注册中心成为研究的有效来源。
