流行病学研究中常常用到年龄别发病率和死亡率,通过计算年龄别发病率和死亡率,看看疾病在哪一个年龄段易发、疾病的趋势是低还是高等。其计算的方法虽较简单,但有时得到的结果并不足以阐明研究的目的。我们在研究上海市肿瘤发病情况时,为解决这样的问题,摸索了一些经验。 Epidemiological studies often use age-related morbidity and mortality. By calculating age-specific morbidity and mortality, it is possible to see at what age at which disease is likely to occur and whether the trend of the disease is low or high. The calculation method is simple, but sometimes the results obtained are not enough to clarify the purpose of the study. When we studied the incidence of cancer in Shanghai, we explored some experiences to solve such problems.