2003~2004年，在云南省4个县（市）随机抽取968名吸毒人员进行调查，并进行多因素累积比数模型分析。
To investigate 968 IDUs by randomly sample from four counties(cities) from 2003 to 2004, and analyze the data by multifactor accumulative odds model.
2003~2004年，在云南省4个县（市）随机抽取968名吸毒人员进行调查，并进行多因素累积比数模型分析。
To investigate 968 IDUs by randomly sample from four counties(cities) from 2003 to 2004, and analyze the data by multifactor accumulative odds model.
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