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: 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。
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