The recommended sample size for a systematicrandomsampling is 500 children.
系统随机抽样的推荐样本大小是500名儿童。
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Methods A questionnaire survey was conducted by systematicrandomsampling from 732 residents of new community and 512 residents of old community with need of health education.
To undertake a systematicrandomsampling, one needs to know the total number of households, the average number of children under 5 years of age in a household, and the total population.