| ประโยคภาษาจีน : 中文句子 | 
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|  diào chá调查  duì xiàng对象  yòng用  duō多  jiē duàn阶段  fēn céng分层  zhěng整  qún群  suí jī随机  chōu yàng抽样  de的  fāng fǎ方法  chōu qǔ抽取  jīn chāng qū金阊区  gè个  shè qū社区  gòng jì共计  hù户  jū mín居民  jiā tíng家庭 | 
| By the multi-stage cluster and simple randomization method, 600 families from 10 communities were acquired. The data were gained by interview in person. |