Cancer Registry Zurich and Zug, Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland.
Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.
Biomed Res Int. 2018 Jun 13;2018:7656197. doi: 10.1155/2018/7656197. eCollection 2018.
Data quality is an important issue in cancer registration. This paper provides a comprehensive overview of the four main data quality indicators (comparability, validity, timeliness, and completeness) for the Cancer Registry Zurich and Zug (Switzerland). We extracted all malignant cancer cases (excluding non-melanoma skin cancer) diagnosed between 1980 and 2014 in the canton of Zurich. Methods included the proportion of morphologically verified cases (MV%), the proportion of DCN and DCO cases (2009-2014), cases with primary site uncertain (PSU%), the stability of incidence rates over time, age-specific incidence rates for childhood cancer, and mortality:incidence (MI) ratios. The DCO rate decreased from 6.4% in 1997 to 0.8% in 2014 and was <5% since 2000. MV% was 95.5% in 2014. PSU% was <3% over the whole period. The incidence rate of all tumours increased over time with site-specific fluctuations. The overall M:I ratio decreased from 0.58 in 1980 to 0.37 in 2014. Overall, data quality of the Cancer Registry Zurich and Zug was acceptable according to the methods presented in this review. Most indicators improved over time with low DCO rates, high MV%, low PSU%, relatively low M:I ratios and age-specific incidence of childhood cancer within reference ranges.
数据质量是癌症登记的一个重要问题。本文全面概述了苏黎世和楚格癌症登记处（瑞士）的四个主要数据质量指标（可比性、有效性、及时性和完整性）。我们提取了 1980 年至 2014 年间在苏黎世州诊断的所有恶性癌症病例（不包括非黑色素瘤皮肤癌）。方法包括形态学验证病例的比例（MV%）、DCN 和 DCO 病例的比例（2009-2014 年）、原发部位不确定的病例比例（PSU%）、发病率随时间的稳定性、儿童癌症的年龄特异性发病率以及死亡率与发病率（MI）比值。DCO 率从 1997 年的 6.4%下降到 2014 年的 0.8%，自 2000 年以来一直低于 5%。2014 年 MV%为 95.5%。整个期间 PSU%均<3%。所有肿瘤的发病率随时间推移而增加，具有特定部位的波动。总体 M:I 比值从 1980 年的 0.58 下降到 2014 年的 0.37。总体而言，根据本综述中提出的方法，苏黎世和楚格癌症登记处的数据质量是可以接受的。大多数指标随着时间的推移而改善，DCO 率低、MV%高、PSU%低、M:I 比值相对较低以及儿童癌症的年龄特异性发病率在参考范围内。
