方法采用分层随机抽样方法。
方法采用分层随机抽样的方法以问卷的形式进行调查。
METHODS Questionnaire survey is stratified and random sampling method in the form.
方法：本研究采用分层随机抽样方法和整群随机抽样方法。
Methods: The stratified sampling and cluster random sampling methods are used in this survey.
方法采用分层随机抽样的方法，对全院护理病历进行质量评价。
Method Strata randomized sampling method was used to evaluate nursing documents in the whole hospital.
方法采用分层随机抽样的方法对乡村卫生人力资源状况进行调查。
Method a random sampling method was carried out to investigate the health human resources situation in rural areas.
采用多阶段分层随机抽样法对2岁以下儿童进行疾病状况询问调查。
Multistage stratified random sampling was conducted an interview survey in status of illness for children under 2 years old.
在5个城市作整群分层随机抽样调查确定与事故倾性有关指标的正常值范围。
The normal value range of indicators about accident proneness were detected according to epidemiological survey results using stratified random cluster sampling in 5 cities.
采用分层随机抽样法对长武王东沟小流域农业产业结构现状进行了调查分析。
This report analyzed the agricultural industry structure of Wangdonggou watershed in Changwu county based on investigation.
方法1999年在北京市自然人群中采用分层随机抽样的方法进行横断面调查。
Methods in 1999, a cross-sectional study was carried out in a natural population of Beijing, using stratified-random sampling method.
本文在分层随机抽样下通过使用辅助变量的偏斜系数提出了几个总体均值的估计。
The paper proposes new separate ratio estimators for population mean using known skewness coefficient of auxiliary variable in stratified random sampling.
方法2008年8月采用分层随机抽样方法，对2 588名医护人员进行调查。
Methods Stratified random sampling was adopted to investigate 2588 doctors and nurses in August, 2008.
方法按照分层随机抽样原则随机抽取部分食品从业人员，匿名独自填写统一的调查问卷。
Method Some food processing employees were selected according to stratified random sampling method, and filled in a unified questionnaire anonymously.
方法：采用分层随机抽样的方法，自行设计问卷，对1000名临床护理人员进行调查。
Methods: Totally 1000 nurses were investigated with a self designed questionnaire using stratified random sampling.
方法用分层随机抽样的方法抽取1298名15 ~ 69岁的农村居民进行问卷调查。
Methods Questionnaire survey was conducted among 1298 residents sampled by randomly stratified sampling. The age of the residents ranged from 15 to 69 years old.
方法采用多阶段分层随机抽样方法，选取了400例正常儿童和25例孤独症儿童为研究对象。
Methods: With the multistage stratified sampling, we randomly selected 400 normal children and 25 autism children as study samples.
方法按照相关调查表要求，对农村供水情况进行普查，供水水质采用分层随机抽样的方法进行监测。
Methods General investigation was adopted to understand the water supply situation in rural areas and stratified random sampling was used to monitor the water quality.
方法采取分层随机抽样方法，抽取深圳市6个区4688名15~74岁居民，对其进行问卷调查。
Methods A total of 4688 residents aged from 15 to 74 years were selected by cluster randomized sampling.
方法采用整群分层随机抽样的方法，对吉林市某医学院校及非医学高校的在校大学生进行问卷调查。
Methods With the method of cluster stratified random sampling, a questionnaire survey was conducted in medical and non-medical higher-educated school in Jilin city.
群样本检验中，系统抽样群样本检验和分层随机抽样群样本检验的效果优于简单随机抽样群样本检验。
During the course of cluster sample verification, systematic sampling and stratified sampling "s accuracy are prior to simple random sampling" s.
证明了在期望值决策准则下，用等概率分层随机抽样得到的方案收益期望值的均值，与用简单随机抽样得到的相同。
It is verified that th action's mean value of the expected value by simple radom sampling is equal to one by stratified radom sampling.
方法采用分层随机抽样方法，抽取安徽省淮北市4所中学的310名教师，采用教师职业倦怠量表（MBI-ES）进行调查。
Methods A total of 310 teachers from 4 middle schools in Huaibei City were selected with stratified random sampling to undergo a survey with teacher job burnout questionnaire(MBI-ES).
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.
介绍分层随机抽样条件下多重插补法处理缺失数据的基本思想，分析可忽略无回答的分层随机抽样建立多重插补的常用方法，并通过实例加以说明。
The paper introduces multiple imputation (mi) for missing data in stratified random sampling, and discusses the ordinary method of mi with ignorable nonresponse, and illustrates the essential steps.
方法采用分层随机抽样的方法，对东部沿海某市18~60岁外来务工人员进行问卷调查，收集艾滋病知识和行为的信息，并采集静脉血进行艾滋病病毒抗体检测。
Methods The migrant workers aged 18~60 in one east city were chosen by stratified random sampling, and surveyed by a questionnaire about knowledge, behavior of AIDS, and blooded to test HIV antibody.
调查在分层逐级抽样法与随机抽样法相结合的抽样基础完成，共收集有效样本1005个。
The survey was completed on the basis of combining stratified sampling and random sampling, collecting 1005 valid samples in total.
在简单随机抽样方法的基础上提出了分层抽样的模糊综合评价模型。
A layered sampling model for fuzzy comprehensive evaluation was developed based on simple random sampling methods.
结论：推导并建立多重分层、整群随机抽样误差的计算公式。
CONCL USION: the calculation formulas of multiple - stratifying and clustering random sampling are theoretically set up.
方法：分阶段分层整群随机抽样调查。
Methods. The survey was conducted according to multi-stage stratified cluster sampling method.
方法采用分层整群随机抽样的方法，对13个中签县市39个村(点)进行调查。
Methods Cluster random sampling was used for investigation of 39 villages selected from 13 counties.
具体介绍了砼强度检测抽样的几种方法：现行规程抽样法；简单随机抽样法；分层抽样法。
This paper introduced several methods about the concrete strength inspection: the sampling method given by the present specification; simple random sampling without replacement; stratified sampling.
应用推荐