各时期死亡率:自1952年开始,宫颈恶性肿瘤的数目和比例从极低值几乎持续上升到最高值,以后有一个小的波动,直至1985年逐渐下降。1971年采用癌早期诊断检查,使绝对值下降至24.5%,相对值下降至39.2%。1952年每6例子宫恶性肿瘤死亡病例中有1例宫颈癌,这部分逐渐增高至1974年,此后未停留在此高度,从未超过50%。部位分类;1955～1965年加拿大子宫恶性肿瘤死亡病例的59.3%为宫颈恶性肿瘤,20～44岁占81.5%,>65岁占43.1%;1969～1972年其子宫恶 Mortality rates at various periods: Since 1952, the number and proportion of cervical malignancies almost continuously increased from their very low values ​​to their highest values, with a small subsequent fluctuation until 1985. Early detection of cancer in 1971 with the absolute value decreased to 24.5%, the relative value decreased to 39.2%. In 1952, one case of cervical cancer was found in every 6 cases of uterine malignant tumor deaths. This part gradually increased to 1974, but never stayed at this height and never exceeded 50%. Site classification; 1955 ~ 1965, 59.3% of cases of uterine cancer deaths in the United States for cervical cancer, 20 to 44 years old accounted for 81.5%,> 65 years accounted for 43.1%; 1969 ~ 1972 uterine evil