Ranstam J, Janzon L, Olsson H
Department of Community Health Sciences, Lund University, Malmö General Hospital, Sweden.
Br J Cancer. 1990 Jan;61(1):120-2. doi: 10.1038/bjc.1990.24.
The national Swedish cancer registry was used to analyse the age-specific time trends in breast cancer incidence in Sweden from 1970 to 1984. The analysis included both a calendar year and a birth cohort approach to estimate time trends in disease occurrence. According to the birth cohort approach there was a statistically significant increase in the incidence with an average annual increase of the incidence of 3.2% (P = 0.0114), 3.4% (P = 0.0002) and 2.2% (P = 0.0264) in the age groups 25-29, 30-34 and 35-39, respectively. Possible causes of the observed increasing incidence are discussed.
瑞典国家癌症登记处用于分析1970年至1984年瑞典乳腺癌发病率的年龄特异性时间趋势。该分析采用了日历年份和出生队列两种方法来估计疾病发生的时间趋势。根据出生队列方法,25 - 29岁、30 - 34岁和35 - 39岁年龄组的发病率有统计学显著增加,平均年增长率分别为3.2%(P = 0.0114)、3.4%(P = 0.0002)和2.2%(P = 0.0264)。文中讨论了观察到的发病率上升的可能原因。