Intrauterine devices (IUD); Adverse reactions; Community service; Control intervention.

宫内节育器；不良反应；社区；防治干预。

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The control intervention could be placebo acupuncture, sham acupuncture, or no acupuncture.

对照组则是安慰剂式的针灸、伪针刺、或不给予针刺。

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Conclusion Prevention and control intervention is an effective measure to protect children with malignant tumor against type a H1N1 influenza.

结论防控干预是应对甲型h1n 1流感，保护恶性肿瘤等高危易感患儿的有效措施。

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The control group that joined no intervention actually were more luckily to advance in their workplace 20, 30 years later.

未参与干预的对照组,更有可能在二三十年后获得升职。

哈佛公开课 - 幸福课课程节选

First of all, the teacher was rated higher by the intervention group than by the control group.

首先，干预组给这名老师的评价,高于对照组。

哈佛公开课 - 幸福课课程节选

Now of course, the presbyters had seized control in the first place because they disapproved of the tactics of suppression and intervention that had been deployed by the bishops, or the prelates, of the old church.

当然，现在长老首先掌握了控制权,因为他们对旧教会主教和教士的,镇压和干预策略非常反对。

耶鲁公开课 - 弥尔顿课程节选

These are the gold standard randomized control trials or intervention studies, in which a control group consuming soda is monitored for weight gain over time against a group which stops drinking soda (and all other dietary and lifestyle factors are controlled for).

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After one year, investigators reported a significant difference in BMI between the intervention and control groups.

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The lower intensity of dietary intervention for the control group during the first few years might have caused a bias toward a benefit in the two Mediterranean-diet groups, since the participants in these two groups received a more intensive intervention during that time.

FORBES: The Mediterranean Diet: The New Gold Standard?