The epidemiology of cancer of the uterine cervix in Canada: 1931 to 1984.

Canadian patterns of morbidity and death from malignancies of the uterine cervix have been examined for the periods 1970 to 1980 and 1931 to 1984, respectively. Age-standardized morbidity and mortality rates have declined significantly during these periods (p = 0.0041 and 0.0001, respectively). The decline in age-standardized morbidity rates is attributable to significant declines in age-specific morbidity rates for five of the eight age groups studied (p less than 0.035), with the most notable decline observed for women aged 55 to 64 years (1.8 fewer new cases per 100,000 population per year). Four of the eight age groups studied reveal significant declines in age-specific mortality rates (p less than 0.0005). However, mortality rates for women aged 85+ years have demonstrated significant increases (p less than 0.03).