南非国家癌症登记处：私立医疗系统 withheld 数据对癌症发病率估计的影响。 （注：“withheld”此处可能有误，应该是“withheld”的原形“withhold”，意为“隐瞒、扣留”等，整句准确意思可能是：南非国家癌症登记处：私立医疗系统隐瞒的数据对癌症发病率估计的影响 ）
South African National Cancer Registry: Effect of withheld data from private health systems on cancer incidence estimates.
作者信息
Singh E, Underwood J M, Nattey C, Babb C, Sengayi M, Kellett P
机构信息
Cancer Epidemiology Research Group, National Cancer Registry, National Health Laboratory Service, Johannesburg, South Africa; Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
出版信息
S Afr Med J. 2015 Jan 12;105(2):107-9. doi: 10.7196/samj.8858.
BACKGROUND
The National Cancer Registry (NCR) was established as a pathology-based cancer reporting system. From 2005 to 2007, private health laboratories withheld cancer reports owing to concerns regarding voluntary sharing of patient data.
OBJECTIVES
To estimate the impact of under-reported cancer data from private health laboratories.
METHODS
A linear regression analysis was conducted to project expected cancer cases for 2005-2007. Differences between actual and projected figures were calculated to estimate percentage under-reporting.
RESULTS
The projected NCR case total varied from 53,407 (3.8% net increase from actual cases reported) in 2005 to 54,823 (3.7% net increase) in 2007. The projected number of reported cases from private laboratories in 2005 was 26,359 (19.7% net increase from actual cases reported), 27,012 (18.8% net increase) in 2006 and 27,666 (28.4% net increase) in 2007.
CONCLUSION
While private healthcare reporting decreased by 28% from 2005 to 2007, this represented a minimal impact on overall cancer reporting (net decrease of <4%).
背景
国家癌症登记处（NCR）是作为一个基于病理学的癌症报告系统而建立的。在2005年至2007年期间，私立健康实验室因担心患者数据的自愿共享而扣留癌症报告。
目的
评估私立健康实验室报告的癌症数据漏报的影响。
方法
进行线性回归分析以预测2005 - 2007年的预期癌症病例数。计算实际数字与预测数字之间的差异以估计漏报百分比。
结果
预计的NCR病例总数从2005年的53,407例（比实际报告病例净增加3.8%）到2007年的54,823例（净增加3.7%）不等。2005年私立实验室报告病例的预测数为26,359例（比实际报告病例净增加19.7%），2006年为27,012例（净增加18.8%），2007年为27,666例（净增加28.4%）。
结论
虽然私立医疗保健报告在2005年至2007年期间下降了28%，但这对总体癌症报告的影响极小（净下降<4%）。
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