Starreveld A A, Hill G B, Brown L B, Koch M
Can Med Assoc J. 1981 Nov 15;125(10):1105-9.
The rates of registration of cases of in-situ and invasive cancer of the cervix in Alberta have fallen for women aged 35 and over since the introduction of screening in the early 1960s, as predicted by theory and described in Finland. However, for women aged 15 to 34 years of age the predicted pattern was followed only initially: the registration rate for in-situ and probably also invasive cancer increased after 1973. This could be due to an actual increase in the incidence of in-situ cancer of the cervix among younger women, as might be expected from the epidemiologic aspects of the disease, but it might also be due to increased recruitment of younger women to the screening program.
自20世纪60年代初引入筛查以来，艾伯塔省35岁及以上女性的子宫颈原位癌和浸润癌登记率如理论预测并在芬兰所描述的那样有所下降。然而，对于15至34岁的女性，仅在最初遵循了预测模式：1973年后，原位癌以及可能的浸润癌登记率有所上升。这可能是由于年轻女性子宫颈原位癌的实际发病率增加，这从该疾病的流行病学角度来看是可以预期的，但也可能是由于更多年轻女性参与了筛查计划。
