分层随机抽样法

作者以甘肃联合大学学生为研究对象，采用分层随机抽样法抽取样本1000名进行调查。

The authors take the students of Gansu Lianhe University as objects of study , using stratified random sampling method taking samples of1000 .

本文用分层随机抽样法，对北京市十所医院患者进行两次内容相同的重复抽查，以便客观地了解中日友好医院的知名度、服务质量和宣传解释工作的效果。

With the stratified random sampling , repeated surveys were twice used to evaluate the hospital image , the service quality and advertising results .

方法采用分层随机抽样法抽取不同类别高危场所，填写统一的暗娼健康及其影响因素调查表。

Methods Different high risk sites were selected by stratified random sampling , and uniform questionnaires about health and other factors of the FSWs were filled .

方法运用多阶段分层随机抽样法，对广西城市人群7881人进行现场问卷调查和体格检查。

Methods A total of 7,881 urban residents from Guangxi Province were enumerated using the multistage and stratified random sampling method . Questionnaire and physical exam were performed in the sampling population .

方法：用分层随机抽样法确定调查点。用尼龙袋集卵孵化法、顶管孵化法分别对人畜进行查病，用系统抽样结合环境抽样法开展螺情调查。

Methods : Using stratified sampling method to determine the survey places , The schistosomiasis in people and livestock were surveyed by the methods of nylon bag incubation and top - tube incubation .

采用按比例分配样本额分层随机抽样调查法，研究面对体育与健康课程标准，苏北地区中小学体育软、硬件指标能否适应新课程的发展要求。

By the method of random and layered sampling , the authors explored whether the soft-and hard-ware for physical education in primary schools in Jiangsu are good enough to carry out the new curriculum criterion .

方法：采用查阅文献、分层随机抽样调查法和咨询法对3个省、9个县、27个乡（镇）、81个村的基层卫生机构进行调查分析和可行性论证。

Method : the reading literature , investigation of hierarchical randomization and consultation methods were used to investigate and analyze foot layer health care institutions in 3 provinces , 9 towns , 27 rural areas , and make a feasible demonstration .

其中着重分析了在城市街道绿化树种结构研究中运用分层随机抽样调查法应如何进行分层与如何确定合适的样本量；

At the same time it was analyzed how to stratify the stratums and define the optimal samples by the stratified random sampling in the study of street tree populations , and some formulas were introduced for calculating the parameters of the urban street tree populations .

方法采用横断面调查设计与分层多阶段随机抽样法获取样本，采用BHemoglobin血红蛋白仪，取指末梢血10μl测量Hb含量。

Methods Cross-sectional study and randomly sampling were used . Blood was collected on tip of finger and the level of hemoglobin was measured using B-Hemoglobin photometer .

方法采取分层随机整群抽样法选择6～11岁儿童2280名，通过Rutter儿童父母问卷、DR及相关因素调查表，比较DR与非DR儿童BP检出率及相关因素。

Methods Through Rutter 's children Behavioral parents ' scale , DR and relative factors checklists , 2280 children from 6 to 11 years old were collected to compare BP test rate and relative factors of children with DR and without DR.

方法采取分层随机不等比例抽样法，抽取镇安、木城、腊勐3个乡9个行政村，逐户调查村民疟史情况。

Methods An epidemiological survey was carried out house by house according to stratified random varied proportion sampling , nine villages of three towns were chosen .

方法对婺源县参合农民，采用多阶段分层整群随机抽样法抽取研究对象，进行纵向对比研究，基线调查和追踪调查均采用入户询问调查，以各项卫生服务指标作为指示指标；

Methods To the peasants who have taken part in the new-type rural CMS in WuYuan , the multi-phase stratified cluster random sampling has been adopted to select the sample people .