方法：对广西北流市民乐镇居民进行卫生服务家庭健康询问调查。
Methods: Residents in the rural areas of Beiliu were interviewed at their home with questionnaires.
采取多阶段分层、整群抽样的方法，对38474人进行家庭入户健康询问调查。
Cluster sampling on various stages and strata method was adopted. 38474 persons were interviewed.
采取多阶段分层、整群抽样的方法，对38474人进行家庭入户健康询问调查。
Cluster sampling on various stages and strata method was adopted. 38474 persons were interviewed.
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