临床预测模型:新预测因子的预测增量值

2020-09-17 文玲子, 王九谊 统技思维

【摘要】新的生物标志物的发现和开发一直以来都是充满前景的领域,这些研究为预测模型提了新的预测因子,可以极大改善对疾病风险的预测。为了对新的预测因子的临床效用得到有意义的结论,必须采取适当的统计方法。本

预测因子是临床预测模型的基础组成部分,探索新的预测因子有助于改善诊断和预后模型的预测准确度,提高个体化治疗水平。随着技术的进步和基础研究的发展,大量新指标,包括基因组学、蛋白质组学和影像学技术指标被发现和提出[1]。然而,新的预测因子在提升预测模型准确性的同时,也增加了测量成本和对患者可能进行的侵入性操作。因此,当评价新的预测因子的预测能力时,尤其是对于测量成本较昂贵的指标,不应只针对该预测因子自身进行评估,而应根据已建立的基于易于获得的预测因子的临床预测模型,来评估新预测因子的预测增量值(incremental value)[2]。因此,对于新预测因子的预测增量值的研究,也被认为是不同于模型开发和模型验证类研究的一种新的临床预测模型的研究类别[2,3]。作为临床预测模型系列文章的第四篇,本文将介绍在原有预测模型基础上评估新预测因子的预测增量值的方法,并讨论这些方法的优势和局限性,以供读者在方法选择和使用上作参考。 1.  评价新预测因子表现的统计指标 随着对新的生物标记物的研究的广泛开展,用于评估其预测增量表现的方法学也在迅速发展和不断完善。我们在表1中总结整理了一些传统的

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  1. [GetPortalCommentsPageByObjectIdResponse(id=2198001, encodeId=5b3721980018e, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=4, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=9f568413042, createdName=ms3000000180832363, createdTime=Thu Apr 11 17:28:40 CST 2024, time=2024-04-11, status=1, ipAttribution=河北省), GetPortalCommentsPageByObjectIdResponse(id=974901, encodeId=f74b9e4901f3, content=为啥还要积分 , beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=abda5529157, createdName=ms4000000560068745, createdTime=Sat Jun 19 17:03:19 CST 2021, time=2021-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=913418, encodeId=b93491341800, content=😁 😁 😁 😁 , beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=16285449716, createdName=水气泱泱, createdTime=Sun Jan 03 22:06:31 CST 2021, time=2021-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904354, encodeId=5ccf9043544f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6a415437015, createdName=嘉豪6006, createdTime=Wed Dec 02 16:59:45 CST 2020, time=2020-12-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=886237, encodeId=f12988623eef, content=讲的非常好, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210924/05fa7ee166034386803e71555f1442ab/b30a0596160e4064947bb8993562a079.jpeg, createdBy=d36d5293229, createdName=刘山河, createdTime=Fri Sep 18 00:22:10 CST 2020, time=2020-09-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1262794, encodeId=b5931262e94f6, content=<a href='/topic/show?id=52941002359d' target=_blank style='color:#2F92EE;'>#预测模型#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=100235, encryptionId=52941002359d, topicName=预测模型)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Thu May 07 13:59:42 CST 2020, time=2020-05-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1310751, encodeId=8b481310e51d7, content=<a href='/topic/show?id=25dc1002255e' target=_blank style='color:#2F92EE;'>#预测因子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=100225, encryptionId=25dc1002255e, topicName=预测因子)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6105386, createdName=宋威, createdTime=Thu May 07 13:59:42 CST 2020, time=2020-05-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1047804, encodeId=239e104e804ad, content=梅斯里提供了很多疾病的模型计算公式,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=CHANGE, createdTime=Wed May 06 01:59:42 CST 2020, time=2020-05-06, status=1, ipAttribution=)]
    2024-04-11 ms3000000180832363 来自河北省

    学习

    0

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    2021-06-19 ms4000000560068745

    为啥还要积分

    0

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    2021-01-03 水气泱泱

    😁 😁 😁 😁

    0

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    2020-12-02 嘉豪6006

    学习了

    0

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    2020-09-18 刘山河

    讲的非常好

    0

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    2020-05-06 CHANGE

    梅斯里提供了很多疾病的模型计算公式,赞一个!

    0

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