分层随机抽样

[方法]采取不等比例分层随机抽样方法，逐户调查疟疾发病情况，采用捕获一再捕获法（Capturere-capturemethod，CRM）估计、分析全县疟疾实际发病率和漏报率。

[ Methods ] Malaria incidence was surveyed over family-to-family by stratified random sampling method . Actual malaria incidence and rate of missing report were estimated by Capture-re-capture method ( CRM ) .

[方法]运用睡眠状况自评量表（SRSS）及自行设计的睡眠影响因素调查问卷对我校在校大学生进行分层随机抽样调查。

[ Methods ] A self-rating scale of sleep ( SRSS ) and self-designed questionnaire were applied to investigate university students by stratified random sampling .

分层随机抽样中R的分别比估计量的可用性及其均方误差的估计量

Usability of the Separate Ratio Estimator and Estimate of Mean Square Errors of this Estimator Under Stratified Sampling

方法采用分层随机抽样的方法，将调查对象分成7个年龄组，每人采集3ml静脉血进行A和C群流脑抗体检测，并做统计分析。

Methods A stratified and random sampling method was adopted for selection of subjects and all the subjects were divided into seven groups by age .

研究对象与方法：采用分层随机抽样方法，对市内研究对象进行问卷调查，利用FoxPro建立数据库，采用SPSS10.0进行统计分析，对问卷调查获得的资料进行统计描述和分析。

Methods and materials : Stratified randomization was used to select the samples . Database was set up by Fox Pro , and SPSS 10.0 was used to describe and analyze the data statistically .

本文采用分层随机抽样的方法，抽取621名学生作为对象，进行了影响心理健康的社会心理因素调查和Zung焦虑自评表，Zung抑郁自评表测试。

We have made an investigation on the social psychological factors in 621 medical students . studying at Jinzhou medical college . using Zung Self Rating-Anxiety Scale and Zung Self Rating-Depression Scale .

方法参考TQC的相关知识，自行设计问卷，采用按护士层次比例分层随机抽样的方法抽取198位护士，采用统一发放、集中收回的调查方式。

Methods A total of 198 nurses using stratified random sampling in proportion to the ratio of different levels of the nurses . A questionnaire with approved validity was used in the survey , and the results were statistically analyzed .

方法：采用分层随机抽样方法，根据WHO规定的诊断标准，对全省5975名20～74岁居住5a及5a以上居民开展了糖尿病流行病学调查。

Methods : According to the diagnostic criteria of DM and IGT recommended by WHO , An investigation on epidemiological characteristics of DM and IGT was carried out among 5975 persons aged 20 ~ 74 years who lived in the communities at least 5 years adopting stratified random sampling method .

采用分层随机抽样的方法抽取450名南京在校大学生被试。

Stratified random sampling technique Nanjing 450 college students were tested .

方法在13个市采用整群分层随机抽样的方法选择调查点。

Methods The investigated sites were selected by cluster sampling from 13 cities .

分层随机抽样方法与小子样检验

The Stratified Random Sampling Method and Small Sample Testing

首先，采用分层随机抽样方法选择典型的、有代表性的测试样本。

Firstly , representative testing samples are gathered by stratified random sampling method .

被试的抽取按照分层随机抽样的方式进行。

The investigative objects are chosen in the way of stratified random sampling .

总之，分层随机抽样可以提高估计精度，减少抽样误差。

Overall , stratified random sampling may increase precision of estimation and decrease sampling error .

分层随机抽样的一个性质

On a property of stratified random sampling

方法采用分层随机抽样方法。

METHOD Using stratified random sampling method .

按比例分层随机抽样

Proportion allocation in stratified random sampling

森林分层随机抽样调查

Stratified random sampling of forest survey

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 .

方法按分层随机抽样方法，进行现场问卷调查。

Methods By using the stratified random sampling method , a questionnaire field study was carried out .

方法用分层随机抽样方法对北京市长期居住成人1416名进行心血管危险因素横断面调查。

Methods A cross-sectional analysis of data of 1416 adults in Beijing who were enrolled by stratified-random sampling method .

对象和方法：通过多阶段分层随机抽样方法抽取天山区2个街道办事处6个社区。

Method : Form the multilevel stratified random sampling , we sampled six communities from the two street offices .

现场调查于2007年5月采用问卷方式进行，采用分层随机抽样方法。

Investigation was carried out in May in 2007 by using questionnaire style , and stratified random sampling was adopted .

方法三阶段分层随机抽样方法。抽取黄浦区15~69岁上海户籍居民，调查1996~2002年吸烟方面的信息。

Methods During the period from 1996 to 2002 , a survey from three - stage stratified sampling was conducted .

分层随机抽样调查1193名20岁以上的成都市社区不同文化程度和职业的居民对中医药服务与利用情况，结果表明中医药是社区卫生机构必须；

We investigated 1193 citizens over 20 years , which have different occupation and educational background in diverse Chengdu ' communities .

一种渔业资源科学调查常用的适应性抽样方法是适应性分配抽样方法，这种调查方法一般应用于分层随机抽样调查。

An adaptive approach is often used in fisheries surveys to allocate sampling efforts , which usually follows stratified random design .

采用多阶段分层随机抽样的方法，从总体中抽得省、市医保参保人员共4500例，构成本研究样本。

Population and the Environment STRATIFIED FUNCTOR With the method of multi-period stratified random sampling , 4500 records were sampled from population .

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 .

为了了解百色市中小学教师信息素养现状，本文在百色市实施了分层随机抽样调查研究。

In order tolearn the present situation of primary and secondary school teachers'information literacy in Baise City , radom sampling investigation is adopted .