没有使用倒序回忆法的控制组正确回忆事件的平均得分为48.7。

The control group, with no reverse recall, averaged 48.7 correct observations about the incident.

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只有小部分人支持非盲法研究没有对照或者控制组，并认为无烟烟草有助于戒烟。

There is only one small, "un-blinded" study without placebos or control subjects that advocates point to as evidence that smokeless tobacco works as a smoking cessation aid.

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入院接受密集化疗的血液学恶性肿瘤的病人被随机分为两组，在单中心实验中用双盲法处理安慰剂组和控制组。

Patients with haematological malignancies receiving intensive chemotherapy and requiring hospitalization were randomized in a double-blind, placebo-controlled single-centre trial.

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