treatment group

基本解释

They were randomly assigned to either a treatment group or a placebo group.
他们被随机安排到治疗组和安慰剂组。
For example, it's impossible to implement such a radical diet without kids and their parents realizing they're in the treatment group.
比如，如果小孩和家长没有意识到这是一种治疗手段，这样全新的食疗就不可能产生效果。
The group on placebo pills showed improvements both at the half way point and at the end of the period, when compared with the no-treatment group.
相对于不做任何处理的那组，服用安慰剂的病人在第二周开始和结束时病情都有所好转。

But hang on: in the long-term chiropractic treatment group, the average level was 146.
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In contrast, the standard-treatment group showed no significant change from baseline on any of the above measures.
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That way you have a randomly selected control and treatment group, just like in a laboratory experiment.
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