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为了解中小学生龋齿患病情况,为防治工作提供依据,于1991年6月和1995年5月,按照《全国学生体质健康状况调查研究工作手册》要求,选择我市城乡中小学各6所,对7～17岁学生2 498人进行调查,结果报告如下:1 龋患情况1991年调查1198人,1995年调查1300人.龋患率明显增高,差异有高度显著性(x~2=38.91,P<0.01);乳齿龋均也有明显的增加.见表1.2 龋患分布2.1 性别 1991年调查,男女生龋患率分别为35.45%(212/598)和31.33%(188/600);1995年调查,男女生龋患率分别为 46.31%(301/650)和44.92%(292/650),男女间差异均无显著性(x~2=2.28,0.25;P>0.05).2.2 城乡1991年调查,城乡学生龋患率分别为
To understand the prevalence of dental caries in primary and secondary schools and provide evidence for prevention and treatment work, in June 1991 and May 1995, 6 primary and secondary schools in urban and rural areas of our city were selected in accordance with the requirements of the Handbook for Investigation and Research on Physical Health Condition of Chinese Students. A survey of 2 498 students aged 7-17 years was carried out and the results were reported as follows: 1 Caries was investigated in 1,198 in 1991 and 1,300 in 1995. The caries prevalence rate was significantly higher (x 2 = 38.91, P <0.01). There was also a significant increase in deciduous caries (Table 1.2). Distribution of caries 2.1 Gender In 1991, the caries prevalence in boys and girls was 35.45% (212/598) and 31.33% (188/600), respectively. In the 1995 survey, The caries prevalence of boys and girls were 46.31% (301/650) and 44.92% (292/650) respectively, there was no significant difference between male and female (x ~ 2 = 2.28,0.25; P> 0.05) Student caries rates were