methods cluster random sampling method was employed in this survey, then 2000 families amounting of 7218 people were selected.
方法采用整群随机抽样方法,抽取城乡居民2000户,共计7218人。
methods:the stratified sampling and cluster random sampling methods are used in this 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 cluster random sampling was carried out in prevalence survey. questionnaire was applied to 3700 rural villagers residing in 7 villages.
方法整群抽样与单纯随机抽样相结合,对青岛市农村7个自然村的370 0名居民进行问卷调查。
methods according with the methods of the forth epidemiologic sampling survey for tuberculosis in our country, the method of stratified cluster random sampling was use in this survey .
方法根据全国第四次结核病流行病学抽样调查方案,采用分层整群随机抽样方法抽取调查点,然后根据调查结果进行分析。
method 1228 women in 5 counties were surveyed by stratified cluster random sampling in the rural area of yichang city.
方法:采用分层多阶段整群抽样方法,对该地区5县12 2 8例农村育龄妇女进行问卷调查。
method 1914 individuals, 5 countries were surveyed by stratified cluster random sampling in the rural area in yichang city.
方法:采用分层多阶段整群抽样方法,对该地区5县1914例居民进行问卷调查。
methods stratified cluster random sampling was carried out in prevalence survey and questionnaires was applied.
方法采取分层整群随机抽样方法进行问卷调查。
methods: epidemiological survey of tuberculosis was conducted by cluster random sampling in the elderly in rural area.
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。
method cluster random sampling method was used to conduct a household survey on the elderly in luoping country, yunnan.
方法采用整群随机抽样的方法,对云南省罗平县的老年人进行入户问卷调查。
methods a questionnaire survey was conducted among the clinical doctors selected by stratified cluster random sampling from grade 1,2 and 3 hospitals in guangzhou.
方法采用分层整群随机抽样方法,询问调查抽中的广州市1级、2级和3级医院的一线临床医生。
methods stratified multi-stage cluster random sampling method was used to select 3000 participants from the residents who were above 18 years living in cuiping district.
方法:采用等比例多阶段整群随机抽样的方法抽取翠屏区18岁以上常住居民3000人进行询问调查、体格检查及血液生化指标的测定。
methods a total number of 7829 elderly aged 40 years and above in 20 villages in dagang district of tianjin was studied, using cluster random sampling methods.
方法在天津市大港区农村随机整群抽取20个行政村为调查点,抽取40岁以上人群共7829人为调查对象。
methods: in the communities chosen by stratified cluster random sampling method, we used geriatric depression scale (gds) to screen about 528 old people to identify the depressed ones.
方法:采用分层整群随机抽样方法在抽取的社区居委会,用老年抑郁量表(gds)对528名社区老年人进行筛查。
methods cluster random sampling was used for investigation of 39 villages selected from 13 counties.
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。
research methodthe stratified multi-stage cluster random sampling method was used in the survey.
研究方法本研究采用分层整群随机抽样方法进行抽样。
methods an questionnaire survey was conducted among 500 permanent residents selected by cluster random sampling in rural area of luquan city, hebei province.
方法采取整群抽样方法,对农村常住居民500人做面对面问卷调查。