这项评估在两年的时间里研究了卢旺达401个初级服务机构中的166个机构。它的结论是根据13个随机抽样、居住在卫生所服务覆盖地区的当地家庭做出的。
The evaluation studied 166 of Rwanda's 401 primary care facilities over a 2-year period; its findings were based on random samples of 13 households living in local areas served by the clinics.
方法采用分层整群抽样方法，对温州地区9742名7 ~16岁的中小学生进行TD横断面调查。
Methods Stratified cluster sampling was carried out to investigate TD in 9742 schoolchildren aged 7 to 16 years old in Wenzhou.
本文对浙北地区的6～18周岁儿童少年人群进行抽样调查，对肥胖流行率及其性别差异性进行了初步研究。
The aim of this study was to investigate the obesity prevalence of north-Zhejiang region in 6~18 children and adolescence.
方法：采取整群随机抽样方法，对本市农村地区老年人群进行结核病流行病学抽样调查。
Methods: Epidemiological survey of tuberculosis was conducted by cluster random sampling in the elderly in rural area.
方法：采用整群抽样方法，对延边地区朝、汉族初中、高中学生1 697名体格指标进行了调查。
Methods: With cluster sampling method, anthropometric data were obtained from 1 697 middle school students of the Han and the Korean nationalities in Yanbian area.
方法在重点地区采取随机抽样方法选择调查点进行饮水砷测定及地方性砷中毒调查。
Methods The investigated sites were randomly sampled in possible regions where determination of arsenic content in drinking water and survey on endemic arsenic poisoning was carried out.
因此，如果在某个地区内只在某单块抽样小区内采样，那末就可能得到某种较为含糊的结果。
Thus setting up a single sample plot in an area can produce some rather bewildering result.
我们利用三阶抽样法，查清了东北地区猞猁种群的分布及数量情况。
The distribution and quantity of Felis lynx population in the northeast have been found out by the three-stage sampling method.
为了解关中地区鸡白痢沙门氏菌的感染现状，在陕西关中地区选择不同鸡场，随机抽样采血分离血清，用鸡白痢血清平板凝集（PAT）试验进行检测。
In order to investigate current situation of S. pullorum infection in the Guanzhong area, the chickens selected randomly were exsanguinated. Their sera were separated and tested by method of PAT.
方法按照整群抽样原则随机抽取陕西关中地区10个县区，共计430名健康婴幼儿。
Methods According to the cluster sampling, we sampled 430 healthy infants totally from 10 districts in the area of Guanzhong in Shaanxi Province.
方法采用整群抽样方法，在安徽省北部地区既往卖血人员比较集中的村，对25~55岁的村民进行调查，包括问卷调查和艾滋病病毒抗体实验室检测。
Methods A cross-sectional survey was conducted among 25~55 years old rural residents in villages with former blood donors in north of Anhui of in China.
本文选择了苏北地区女性作为研究对象，通过对抽样调查数据的计量分析，对苏北地区农村女性劳动力的外出现象进行了深入细致的研究。
By the analysis on the sample investigation data, this paper taking the female labor in rural as research object studied the female labor's outgoing of Subei rural carefully.
目的通过大样本的抽样调查，观察和比较我国不同地区17～ 2 1岁男青年营养状况的地区分布特点。
Objective To compare and observe the geographic distribution of nutrition status in Chinese male youth aged 17-21 years in different are as by larger sample survey.
方法采用整群随机抽样方法，抽取荣成市沿海地区8757名渔民为调查对象。
Methods The grouped random sampling rule survey was carried out in a sample population of 8757 who lived in seaside district of Rongcheng city.
采用随机抽样方法，抽取西安市南郊经济中等地区部分企事业单位2 97名婴儿，对其喂养状况及其影响因素进行了调查。
Feeding status and factors affecting breastfeeding of 297 infants in the middle level areas of economic development of the south suburb in Xian were investigated, with randomly sample method.
方法通过分层整群抽样对广州地区2 000名大学生开展应对方式的问卷调查。
Methods With stratified cluster sampling method, 2,000 undergraduates were investigated by Coping Style Questionnaire.
方法采用分层整群随机抽样的方法，从长沙地区高校中随机抽取20个班级，对所选班级的上网大学生进行现场无记名问卷调查。
Methods An anonymous questionnaire was conducted on 1 040 internet users, who were cluster stratified sampled from 20 classes in Changsha colleges.
方法采用分层整群随机抽样的方法，从长沙地区高校中随机抽取20个班级，对所选班级的上网大学生进行现场无记名问卷调查。
Methods An anonymous questionnaire was conducted on 1 040 internet users, who were cluster stratified sampled from 20 classes in Changsha colleges.
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