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临床研究中的过程评价(Process evaluation)是什么意思?

2018-11-29 褚红玲 赵一鸣 临床流行病学和循证医学

这样一个研究:主研究是一项正在中国农村开展的大型整群随机对照试验,评估减少钠摄入量对降低脑卒中发病和死亡的效果。该研究自2014年启动以来,在河北、辽宁、宁夏、山西和陕西五省纳入10个县,共600个村,每村35人,合计21000名受试者参加。所有被纳入的村被按照1:1的比例随机分成干预组和对照组。干预组会接受免费提供的低钠盐以取代普通食用盐。对照组照常自行购买和食用普通盐。具体的研究方案已经在

这样一个研究:主研究是一项正在中国农村开展的大型整群随机对照试验,评估减少钠摄入量对降低脑卒中发病和死亡的效果。该研究自2014年启动以来,在河北、辽宁、宁夏、山西和陕西五省纳入10个县,共600个村,每村35人,合计21000名受试者参加。所有被纳入的村被按照1:1的比例随机分成干预组和对照组。干预组会接受免费提供的低钠盐以取代普通食用盐。对照组照常自行购买和食用普通盐。具体的研究方案已经在Am Heart J发表,详见参考文献。 我们为什么要做过程评价呢?我们希望通过过程评价,了解在SSaSS项目的干预过程中,干预的实施情况、受试者对干预的依从程度,以及受试者在试验过程中对干预的认知等。过程评价的结果既能帮助我们深度了解该研究的实施情况,并辅助解释研究结果,还可以为后续干预措施的推广提供改进建议和依据。 在我们长期进行临床研究的过程中,可能会发现,有的干预措施从理论上讲应该会有较好的研究效果,但是研究结果却与我们的设想大相径庭。尤其是一些复杂的干预措施,或者是多中心的临床研究等。这时候,我们很可能就会坐在电脑前,看着一堆冷冰冰的数据冥思苦想,究竟是为什么会这样,然后把数据翻来覆去做

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    2024-02-14 廖医生 来自广东省

    PRO

    0

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    2019-09-26 linlin2312
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    2018-12-01 huagfeg
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    2018-12-01 sunylz
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    2018-11-29 惠映实验室

    学习了,谢谢分享。

    0

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随着冬季寒冷气候的到来,感冒的病人开始逐渐增多,去年流感疫情的影响,让很多老百姓对“感冒”的了解和重视逐渐加强,但需要向大家明确的是,“感冒”并不都是“流感”,呼吸道合胞病毒(RSV)也是主要元凶之一。大部分成人感染这种病毒后,临床症状跟一般的流感导致的上呼吸道感染症状差不多,会出现流鼻涕咳嗽等。

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