用随机模型求得所有可能出现的检测感染率与感染度（阳性者感染度）所对应的Ｍ 和Ｋ 值，结合人群实际感染率＝ １－ 人群中非感染者的比例－ 人群中仅有单性别寄生虫感染的比例，即可得到“实际”感染率，再以观察到的感染率为纵坐标，感染度为横坐标，在坐标纸上绘出其对应的点，该点即代表实际感染率，把图中所有实际感染率为０．１０ 的点连成线，由此绘出袖珍图（仅考虑８ 岁及以上的人群）。实际工作者可以用单次改良Ｋａｔｏ 法粪检所得的人群感染率和阳性者感染度（不包括７ 岁及以下的儿童））直接从图上查出该人群的真实感染率 The stochastic model was used to determine the M and K values ​​for all possible detection rates of infection and the degree of infection (positive ones), and the actual infection rate of the combined population = 1 - the proportion of non-infected people in the population - only the single The ratio of gender parasite infection, you can get the “actual” infection rate, and then observed the infection rate as the vertical axis, the degree of infectivity as abscissa, the coordinates of the paper draw its corresponding point, the point that represents the actual infection Rate, the figure of all the actual infection rate of 0.10 points connected into lines, which draw a pocket map (only consider the age of 8 and above). Practitioners can detect the true infection rate of the population directly from the map by using the single-pass rate of infection and positive infection (excluding children aged 7 years and under) of the Kato method