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为了解大安市地方性氟中毒病区群众对地方氟病防治知识的知晓情况,给今后开展地方性氟中毒健康教育活动打下基础,于今年开展了地方性氟中毒防治知晓情况调查现将调,结果如下。1调查点及调查对象1.1调查点按照随机抽样的原则,在25个地方性氟中毒病区乡(镇)抽取5个乡(镇),分别是?
In order to understand the local knowledge of local prevention and treatment of fluorine in endemic fluorosis area of Da’an, to lay the foundation for future endemic fluorosis health education activities, this year to carry out a survey of endemic fluorosis prevention and control of the situation will now transfer, The result is as follows. 1 Survey points and respondents 1.1 Investigation points According to the principle of random sampling, five townships (towns) in 25 endemic fluorosis areas were selected and sampled, respectively?