Phillips A J
Can Med Assoc J. 1965 Jul 10;93(2):63-7.
A 20-year statistical review was undertaken to ascertain significant changes in cancer mortality in Canada by site and sex. Cancer in nine major sites and leukemia were studied. Trend lines were fitted to the death rates and the probability was computed that the slopes of these lines had changed significantly. Of the 17 analyses made, significant decreases in mortality were found in six and significant increases in six. In the remaining five analyses no significant change in mortality was found.
进行了一项为期20年的统计回顾,以确定加拿大按部位和性别划分的癌症死亡率的显著变化。研究了九个主要部位的癌症和白血病。对死亡率拟合了趋势线,并计算了这些线的斜率发生显著变化的概率。在进行的17项分析中,有6项发现死亡率显著下降,6项发现死亡率显著上升。在其余5项分析中,未发现死亡率有显著变化。