... 阶梯式教学 teach gradually 随机双盲对照试验 multicenter randomized controlled clinical trials 前判 former adjudication ...
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方法用多中心随机双盲对照试验。
Methods a multicenter, double-blind, randomized controlled trial was conducted.
然而，极具讽刺的是，通过使用无烟烟草戒烟与使用安慰对照组相比，临床对照控制组没有进行随机的双盲试验。
Most devastatingly, however, there are no randomized, double-blinded placebo controlled clinical trials that compare the success of quitting smoking by using smokeless tobacco versus using a placebo.
该双盲随机严格对照试验纳入了24名48到84岁的患者。
The double-blind, randomized, placebo-controlled study included 24 patients ages 48 to 84.
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