How to sample the survey of health management needs of community residents in Hebei Province?

The survey of health management needs of community residents in Hebei Province should be sampled from 28 monitoring points in 1 1 city. A national survey of residents' health literacy was conducted at 28 monitoring points in the province 1 1 city. The staff of the district (county) CDC will visit the sampled families one after another and conduct a questionnaire survey. Respondents: 15 ~ 69 years old. Survey method of urban and rural resident population: The survey adopts stratified and multi-stage random sampling method. Each monitoring area (county) selects 3 streets (towns), each street (town) selects 2 neighborhood committees (villages), each neighborhood Committee (village) selects 1 household (about 750 households), and each district selects 55 households, 1 household. Each monitoring area (county) is expected to investigate 240 people, and the province plans to investigate 6720 people.