一、流行病学观察白血病主要侵害年龄大于55岁的成年人和不满10岁的儿童。发病的性别差异男:女=1.3—1.5:1。观察发现多半为急性白血病(71.4%),慢性白血病次之(21.9%),单核细胞性较少(6.7%)。死于白血病的可能性随着年龄增加而增大,如在苏联1970年对年龄<30、30—39、40—49、50—59和≥60岁的男人来说,每10~6人中死于白血病的分别相应为44、50、87、189和309例。 Epidemiological observations Leukemia mainly affects adults over the age of 55 and children under the age of 10. The gender difference in the incidence of male: female = 1.3-1.5:1. Most of the observations were found in acute leukemia (71.4%), followed by chronic leukemia (21.9%), and mononuclear cells (6.7%). The likelihood of death from leukemia increases with age, as in the Soviet Union in 1970 for men aged <30, 30-39, 40-49, 50-59, and ≥60, per 10 to 6 The corresponding deaths from leukemia were 44, 50, 87, 189, and 309 cases, respectively.