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以线索调查法于1979年8～10月调查延边地区朝汉族混居公社的11所中、小学的1,433名学生,年龄为6～19岁,其中8～12岁占847人。经详细了解病史并由作者对可疑者作精神和躯体的检查,排除神经系统其他疾病及其他因素后,查出轻微脑功能障碍综合征(MBD)51例,患病率为3.5％。发现朝汉两族儿童患病率(分别为3.1％及4.6％)无显著差异,男童患病率显著高于女童,患孩年龄为7～16岁,而9岁以后患者显著增加。致病有关因素除13例不明外,余
A census method was used to survey 1,433 primary and secondary school students in Hanban commune in Yanbian from August to October 1979, aged from 6 to 19, of whom 847 were from 8 to 12 years old. After a detailed understanding of the medical history and mental and physical examination of the suspicious persons by the authors, 51 cases of mild brain dysfunction syndrome (MBD) were diagnosed after excluding other diseases of the nervous system and other factors, with a prevalence of 3.5%. The prevalence rates of children of both ethnic groups in Han and Han dynasties (3.1% and 4.6% respectively) were not significantly different. The prevalence of boys was significantly higher than that of girls, with children aged 7-16 years and significantly increased after 9 years of age. Pathogenic factors in addition to unknown 13 cases, Yu