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1材料与方法1.1资料来源来自龙川县2011年免疫规划疫苗接种率调查。1.2调查对象调查时满12月龄的儿童。1.3方法1.3.1抽样方法全县每个镇随机抽取一个行政村,每个行政村随机调查14名对象。1.3.2分析方法巴雷托曲线分析方法。
1 Materials and Methods 1.1 Source of information from the 2011 Longchuan immunization program vaccination rate survey. 1.2 Survey respondents aged 12 months of age children. 1.3 Methods 1.3.1 Sampling Methods Each county in the county randomly selected an administrative village, each administrative village random survey of 14 subjects. 1.3.2 Analysis methods Barrett curve analysis method.