季节性疾病发病高峰期的估计

某些疾病是有季节性的。某些有昼夜变动的周期性或一些角度资料。对这些资料的分析不能用传统的几旬构成比或月旬相对比的方法,应该用圆形分布法进行分析。圆形分布法目前在国内应用尚不多,其应用的原理是通过三角函数的代换,对季节性或周期性资料分布及高峰期所在时间提供较确切的吋点,对疾病的预防和死囚分析可提供科学依据。

ESTIMATION OF PEAK OF INCIDENCE OF SEASONAL DISEASES

Some diseases are seasonal. For such diseases there are data about periodicity in twenty-fourhour changes, or angular data. To analyse such data neither monthly or ten-day constituent ratio, nor relative ratio is usually used. Instead, the circular distribution method should be used, but at present it is seldom used in our country. The principle is by means of substitution of triangular functions, to provide more accurate time of the peak period about the seasonableness and periodicity, and, moreover, scientific basis for prevention of diseases and analysis of the cause of death.