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07 July 2005 11:00
在臨床試驗設計中設對照組的重要性
設這種對照,一定要注意 選用合適的終點指標。一般主張用基于病人的(patient-based) 終點或指標,這包括病死率、病殘率等,而不主張用基于疾病的(diseas e-b
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