方法以修订的《儿童孤独问卷》与自编的《小学生社会创造性倾向问卷》为工具,对以整群取样法随机选取的3至6年级小学儿童共411人进行测查。
Methods Children's Loneliness Scale and Social Creativity Tendency Questionnaire for primary school Children were administered to 411, 3 to 6 graders of primary school by cluster sampling.
更有希望的是,崔政对一群志愿者进行取样检验,发现10 - 15%的人们具有同样的超级抗癌白细胞。
Even more promising, Cui has sampled a group of human volunteers and found that 10 to 15 percent have similar super cancer-fighting white blood cells.
方法对北京市20所中学学生进行预防AIDS健康教育和生活技能培训,在培训前、后采用整群抽样方法获取样本进行评估。
Methods AIDS prevention and life skill training were developed among students in 20 middle schools. Evaluations were carried out before and after the education by cluster samplings.
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