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我们于1990年4至5月对济南市历下、天桥、市中及槐荫4个市区小学学生进行了头虱感染情况的调查。每区随机抽查2所小学,每所小学随机抽查2—3个班级,共查8所小学16个班级1083名学生,其中男生556名,女生527名。以在头发发现虱卵为阳性者42例,阳性率为3.9％。其中除1例为留长发的男生外,其余41例均为女生。男、女生阳性率分别为0.2％和7.8％,经统计学处理两者间有极显著性差异(n=6.46,P<0.01)。4个市区均有发现,
From April to May 1990, we conducted a survey on head lice infection in 4 urban primary school students in Lixia, Flyover, Central and Huaiyin of Jinan City. Two primary schools were randomly selected in each district. 2-3 pupils were randomly selected in each primary school. A total of 1083 students from 16 primary and secondary schools in 8 primary schools were investigated, including 556 boys and 527 girls. In the hair found lice eggs were positive in 42 cases, the positive rate was 3.9%. Among them, except for one male who left long hair, the remaining 41 were female. The positive rates of males and females were 0.2% and 7.8%, respectively. There was a significant difference between the two groups (n = 6.46, P <0.01). 4 urban areas have found,