Clarke E A, Hilditch S
Can Med Assoc J. 1983 Dec 15;129(12):1271-3.
Since cancer registries have different recording practices, the incidence rates that they report must be compared with caution. Indexes of reliability of recording indicated that in 1971 the reported incidence of cervical cancer in Ontario was too high. In 1971 Ontario used a method of passive reporting of cancer cases: the Ontario Cancer Registry linked hospital reports, death certificates and reports from the Ontario Cancer Treatment and Research Foundation's treatment centres to produce a single record for each case. Pathological confirmation was requested for cases thus recorded by the registry. In 26% of cases a diagnosis other than cervical cancer was indicated. With these cases omitted, the incidence rate became 15.1/100 000, as opposed to the 20.5/100 000 reported by the registry.
由于癌症登记处有不同的记录方式，因此对它们报告的发病率进行比较时必须谨慎。记录可靠性指标表明，1971年安大略省报告的宫颈癌发病率过高。1971年，安大略省采用了一种被动报告癌症病例的方法：安大略癌症登记处将医院报告、死亡证明以及安大略癌症治疗与研究基金会治疗中心的报告联系起来，为每个病例生成一份单一记录。登记处要求对如此记录的病例进行病理确认。在26%的病例中，显示的诊断并非宫颈癌。剔除这些病例后，发病率变为15.1/10万，而登记处报告的发病率为20.5/10万。
