It is increasingly argued that the effectiveness of health promotion interventions should be measured to inform policy and practice. The randomized controlled trial (RCT) continues to be regarded as ...
More than one-eighth of the randomized trials of cancer drugs seeking regulatory approval in China in recent years used inappropriate controls to test the effectiveness and safety of the drugs, ...
In a randomized complete block design (RCBD), each level of a "treatment" appears once in each block, and each block contains all the treatments. The order of treatments is randomized separately for ...
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