1·DESIGN: Cluster sampling and stratified analysis.
设计：整群抽样，分层分析。
2·Method cluster sampling and cross sectional study.
方法整群抽样，横断面调查。
3·Methods Randomly cluster sampling method was applied.
方法采用整群随机抽样调查方法。
4·DESIGN: Cluster sampling and cross-sectional investigation.
设计：整群抽样，横断面调查。
5·DESIGN: Randomized cluster sampling, cross-sectional study.
设计：随机整群抽样，横断面调查。
6·DESIGN: a stratified random cluster sampling investigation.
设计：分层整群抽样调查。
7·DESIGN: a cluster sampling and simple randomized sampling survey.
设计：整群抽样与单纯随机抽样。
8·DESIGN: Random cluster sampling methods and a cross-section survey.
设计：随机整群抽样，横断面调查。
9·Methods: Data were collected with the method of hospital-based cluster sampling.
方法采用以医院为基础的监测方法收集资料。
10·Methods: To applied cluster sampling method interview all the village health workers.
方法：采取整群抽样，对安宁市村级卫生服务提供者进行调查。