Fig. 3: Annual incidence rates (per 100 000 women) of invasive cervical cancer among women less than 50 years of age and among those 50 years or older in Canada (solid line) and in the United States (broken line). Rates are standardized according to age distribution of Canadian population in 1991. Source: Cancer Bureau, Population and Public Health Branch, Health Canada, and the National Cancer Institute Statistics, Epidemiology, and End Results (SEER) program.