头对头比较研究(head to head comparative trial)的定义及特点

2013-06-02 MedSci MedSci原创

    头对头试验(Head to Head)是“非安慰剂对照”的试验,是以临床上已使用的治疗药物或治疗方法为对照的临床试验。仅仅指两种已经确认有效的治疗方法的比较。    在药物的后期的临床试验,如临床IV期研究,一种是单组研究,另一种情况则多是“头对头研究”,即与临床公认的“阳性药物”进行对比研究。所谓“头对头”(Head to

    头对头试验(Head to Head)是“非安慰剂对照”的试验,是以临床上已使用的治疗药物或治疗方法为对照的临床试验。仅仅指两种已经确认有效的治疗方法的比较。    在药物的后期的临床试验,如临床IV期研究,一种是单组研究,另一种情况则多是“头对头研究”,即与临床公认的“阳性药物”进行对比研究。所谓“头对头”(Head to Head)研究即直接比较研究,又分为优效性研究和等效/非劣效性研究。    头对头试验不仅是观察有效与安全,更重要观察两组试验药物的“临床获益的大小”。一般要求试验组与对照组的均衡性、可比性更强,使研究目的所针对的问题能够在尽可能单纯的条件下进行比较。又分为优效性研究和等效/非劣效性研究。所以这类研究时,对患者的入选与排除标准限定非常严格,以尽可能减小两组间基线的差别,从而使研究具有可比性。基线的微小差别,均有可能影响到最终的结果,甚至足以稀释了来自于药物本身的有益影响。但在临床试验实际操作过程中,头对头研究十分困难。     例如降压药

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  1. [GetPortalCommentsPageByObjectIdResponse(id=11208, encodeId=2bd6112081c, content=降压药的临床研究,试验不再简单讨论降压本身是否有益,而是观察不同类别的降压药物在获得相同降压幅度的基础上,是否对靶器官有额外的保护作用。, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e67a108047, createdName=zaki1803, createdTime=Thu Aug 21 19:07:00 CST 2014, time=2014-08-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1949802, encodeId=0dad1949802ed, content=<a href='/topic/show?id=92ed443582b' target=_blank style='color:#2F92EE;'>#头对头#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44358, encryptionId=92ed443582b, topicName=头对头)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a57b78, createdName=朱睿睿, createdTime=Wed Aug 28 12:57:00 CST 2013, time=2013-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=5941, encodeId=5c225941f6, content=所谓“头对头研究”,就是两种有效的治疗方法互相PK一下,看谁的效果更好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=211, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRl88IIG7mnPw9aCyiclFjtObkW7hiaPluxVnP8W0L50Zk28TB6bOUvDAyD1p9jfvTD8fLIANPtx1tK/0, createdBy=0b0779675, createdName=jet747, createdTime=Fri Jul 19 16:47:00 CST 2013, time=2013-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1631314, encodeId=a9c81631314f8, content=<a href='/topic/show?id=ae581e80805' target=_blank style='color:#2F92EE;'>#Trial#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17808, encryptionId=ae581e80805, topicName=Trial)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c1ad21715548, createdName=feifers, createdTime=Tue Jun 04 10:57:00 CST 2013, time=2013-06-04, status=1, ipAttribution=)]
    2014-08-21 zaki1803

    降压药的临床研究,试验不再简单讨论降压本身是否有益,而是观察不同类别的降压药物在获得相同降压幅度的基础上,是否对靶器官有额外的保护作用。

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=11208, encodeId=2bd6112081c, content=降压药的临床研究,试验不再简单讨论降压本身是否有益,而是观察不同类别的降压药物在获得相同降压幅度的基础上,是否对靶器官有额外的保护作用。, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e67a108047, createdName=zaki1803, createdTime=Thu Aug 21 19:07:00 CST 2014, time=2014-08-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1949802, encodeId=0dad1949802ed, content=<a href='/topic/show?id=92ed443582b' target=_blank style='color:#2F92EE;'>#头对头#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44358, encryptionId=92ed443582b, topicName=头对头)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a57b78, createdName=朱睿睿, createdTime=Wed Aug 28 12:57:00 CST 2013, time=2013-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=5941, encodeId=5c225941f6, content=所谓“头对头研究”,就是两种有效的治疗方法互相PK一下,看谁的效果更好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=211, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRl88IIG7mnPw9aCyiclFjtObkW7hiaPluxVnP8W0L50Zk28TB6bOUvDAyD1p9jfvTD8fLIANPtx1tK/0, createdBy=0b0779675, createdName=jet747, createdTime=Fri Jul 19 16:47:00 CST 2013, time=2013-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1631314, encodeId=a9c81631314f8, content=<a href='/topic/show?id=ae581e80805' target=_blank style='color:#2F92EE;'>#Trial#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17808, encryptionId=ae581e80805, topicName=Trial)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c1ad21715548, createdName=feifers, createdTime=Tue Jun 04 10:57:00 CST 2013, time=2013-06-04, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=11208, encodeId=2bd6112081c, content=降压药的临床研究,试验不再简单讨论降压本身是否有益,而是观察不同类别的降压药物在获得相同降压幅度的基础上,是否对靶器官有额外的保护作用。, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e67a108047, createdName=zaki1803, createdTime=Thu Aug 21 19:07:00 CST 2014, time=2014-08-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1949802, encodeId=0dad1949802ed, content=<a href='/topic/show?id=92ed443582b' target=_blank style='color:#2F92EE;'>#头对头#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44358, encryptionId=92ed443582b, topicName=头对头)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a57b78, createdName=朱睿睿, createdTime=Wed Aug 28 12:57:00 CST 2013, time=2013-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=5941, encodeId=5c225941f6, content=所谓“头对头研究”,就是两种有效的治疗方法互相PK一下,看谁的效果更好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=211, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRl88IIG7mnPw9aCyiclFjtObkW7hiaPluxVnP8W0L50Zk28TB6bOUvDAyD1p9jfvTD8fLIANPtx1tK/0, createdBy=0b0779675, createdName=jet747, createdTime=Fri Jul 19 16:47:00 CST 2013, time=2013-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1631314, encodeId=a9c81631314f8, content=<a href='/topic/show?id=ae581e80805' target=_blank style='color:#2F92EE;'>#Trial#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17808, encryptionId=ae581e80805, topicName=Trial)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c1ad21715548, createdName=feifers, createdTime=Tue Jun 04 10:57:00 CST 2013, time=2013-06-04, status=1, ipAttribution=)]
    2013-07-19 jet747

    所谓“头对头研究”,就是两种有效的治疗方法互相PK一下,看谁的效果更好!

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=11208, encodeId=2bd6112081c, content=降压药的临床研究,试验不再简单讨论降压本身是否有益,而是观察不同类别的降压药物在获得相同降压幅度的基础上,是否对靶器官有额外的保护作用。, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e67a108047, createdName=zaki1803, createdTime=Thu Aug 21 19:07:00 CST 2014, time=2014-08-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1949802, encodeId=0dad1949802ed, content=<a href='/topic/show?id=92ed443582b' target=_blank style='color:#2F92EE;'>#头对头#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44358, encryptionId=92ed443582b, topicName=头对头)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a57b78, createdName=朱睿睿, createdTime=Wed Aug 28 12:57:00 CST 2013, time=2013-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=5941, encodeId=5c225941f6, content=所谓“头对头研究”,就是两种有效的治疗方法互相PK一下,看谁的效果更好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=211, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRl88IIG7mnPw9aCyiclFjtObkW7hiaPluxVnP8W0L50Zk28TB6bOUvDAyD1p9jfvTD8fLIANPtx1tK/0, createdBy=0b0779675, createdName=jet747, createdTime=Fri Jul 19 16:47:00 CST 2013, time=2013-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1631314, encodeId=a9c81631314f8, content=<a href='/topic/show?id=ae581e80805' target=_blank style='color:#2F92EE;'>#Trial#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17808, encryptionId=ae581e80805, topicName=Trial)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c1ad21715548, createdName=feifers, createdTime=Tue Jun 04 10:57:00 CST 2013, time=2013-06-04, status=1, ipAttribution=)]
    2013-06-04 feifers