JCO:有时医学统计然撒谎!不同统计方法结果迥异

2016-06-17 MedSci MedSci原创

抗糖尿病药物二甲双胍已证实与抗肿瘤活性和降低许多癌症(包括胰腺癌)的负担有关,但各种研究结果很不一致,例如证明可能有效的:Cell Metabolism:降糖药能使胰腺癌干细胞“窒息”,以及AJG:女性服二甲双胍或可预防胰腺癌;另外,RCT证明没有疗效:Lancet:二甲双胍不能改善晚期胰腺癌患者的治疗结果和Lancet Oncol:二甲双胍治疗胰腺癌,证据存在?各种研究结果很不一致,虽然与很多因

抗糖尿病药物二甲双胍已证实与抗肿瘤活性和降低许多癌症(包括胰腺癌)的负担有关,但各种研究结果很不一致,例如证明可能有效的:Cell Metabolism:降糖药能使胰腺癌干细胞“窒息”,以及AJG:女性服二甲双胍或可预防胰腺癌;另外,RCT证明没有疗效:Lancet:二甲双胍不能改善晚期胰腺癌患者的治疗结果和Lancet Oncol:二甲双胍治疗胰腺癌,证据存在?各种研究结果很不一致,虽然与很多因素有关,但统计学也是不可忽视的重要因素之一。这篇案例说明,采用不同的统计学策略,最终结果完全不一致。 二甲双胍纳入癌症临床试验治疗组是基于回顾性流行病学研究中已经证明可以提高生存,可是,当用“有/无”二分类法、采用传统Cox比例风险回归模型进行分析时,可能存在意外偏差。在一大型胰腺导管腺癌患者队列中,我们检验了二甲双胍暴露的定义、分析方法、估计影响二甲双胍暴露量的患者选择对生存期的影响。 本研究纳入新确诊的胰腺导管腺癌合并糖尿病的患者,纳入980名进行回顾性分析,记录二甲双胍暴露情况。通过Kaplan-Meier和log-rank方法评估中位生存期。计算风险比和95%可信区间,对随时间变化的

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1632048, encodeId=41681632048ed, content=<a href='/topic/show?id=be9f3422e0e' target=_blank style='color:#2F92EE;'>#医学统计#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=34227, encryptionId=be9f3422e0e, topicName=医学统计)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b87121842187, createdName=30397611, createdTime=Tue Apr 18 21:14:00 CST 2017, time=2017-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=160894, encodeId=0a9b1608940f, content=好文,值得借鉴, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5f8c1618851, createdName=Kim.yu, createdTime=Wed Dec 07 10:44:13 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1891276, encodeId=e32e18912e68b, content=<a href='/topic/show?id=25b0102e2df' target=_blank style='color:#2F92EE;'>#JCO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10272, encryptionId=25b0102e2df, topicName=JCO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6da1120, createdName=lidong40, createdTime=Wed Dec 07 04:14:00 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90522, encodeId=b36990522af, content=不同的统计方法,差距这么大, beContent=null, objectType=article, channel=null, level=null, likeNumber=164, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160528/IMG5749A60FD120A3124.jpg, createdBy=65fe1709307, createdName=青荷, createdTime=Sun Jun 19 10:23:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1542967, encodeId=e17d154296eea, content=<a href='/topic/show?id=3f53e894718' target=_blank style='color:#2F92EE;'>#统计方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78947, encryptionId=3f53e894718, topicName=统计方法)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=127213510199, createdName=12498761m60暂无昵称, createdTime=Sun Jun 19 00:14:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90437, encodeId=2ba09043e8c, content=好文章,值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sat Jun 18 18:19:00 CST 2016, time=2016-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90221, encodeId=53b290221e0, content=这一个案例非常值得借鉴了,不同的统计策略,差别这么大,尤其是COX回归我们还是要谨慎,最好做时依协变量, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/PiajxSqBRaELaQBNibpuZ0aRbWKgR0puf0vibBuZ7gIkKCXEqibYyJXVhsnibpCuhlqHGWRyvHMdFwm4UXjcpPUFLkw/0, createdBy=2f0f1714785, createdName=wxsession8b50a880, createdTime=Fri Jun 17 11:38:00 CST 2016, time=2016-06-17, status=1, ipAttribution=)]
    2016-12-07 Kim.yu

    好文,值得借鉴

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1632048, encodeId=41681632048ed, content=<a href='/topic/show?id=be9f3422e0e' target=_blank style='color:#2F92EE;'>#医学统计#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=34227, encryptionId=be9f3422e0e, topicName=医学统计)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b87121842187, createdName=30397611, createdTime=Tue Apr 18 21:14:00 CST 2017, time=2017-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=160894, encodeId=0a9b1608940f, content=好文,值得借鉴, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5f8c1618851, createdName=Kim.yu, createdTime=Wed Dec 07 10:44:13 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1891276, encodeId=e32e18912e68b, content=<a href='/topic/show?id=25b0102e2df' target=_blank style='color:#2F92EE;'>#JCO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10272, encryptionId=25b0102e2df, topicName=JCO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6da1120, createdName=lidong40, createdTime=Wed Dec 07 04:14:00 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90522, encodeId=b36990522af, content=不同的统计方法,差距这么大, beContent=null, objectType=article, channel=null, level=null, likeNumber=164, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160528/IMG5749A60FD120A3124.jpg, createdBy=65fe1709307, createdName=青荷, createdTime=Sun Jun 19 10:23:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1542967, encodeId=e17d154296eea, content=<a href='/topic/show?id=3f53e894718' target=_blank style='color:#2F92EE;'>#统计方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78947, encryptionId=3f53e894718, topicName=统计方法)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=127213510199, createdName=12498761m60暂无昵称, createdTime=Sun Jun 19 00:14:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90437, encodeId=2ba09043e8c, content=好文章,值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sat Jun 18 18:19:00 CST 2016, time=2016-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90221, encodeId=53b290221e0, content=这一个案例非常值得借鉴了,不同的统计策略,差别这么大,尤其是COX回归我们还是要谨慎,最好做时依协变量, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/PiajxSqBRaELaQBNibpuZ0aRbWKgR0puf0vibBuZ7gIkKCXEqibYyJXVhsnibpCuhlqHGWRyvHMdFwm4UXjcpPUFLkw/0, createdBy=2f0f1714785, createdName=wxsession8b50a880, createdTime=Fri Jun 17 11:38:00 CST 2016, time=2016-06-17, status=1, ipAttribution=)]
    2016-12-07 lidong40
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    2016-06-19 青荷

    不同的统计方法,差距这么大

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1632048, encodeId=41681632048ed, content=<a href='/topic/show?id=be9f3422e0e' target=_blank style='color:#2F92EE;'>#医学统计#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=34227, encryptionId=be9f3422e0e, topicName=医学统计)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b87121842187, createdName=30397611, createdTime=Tue Apr 18 21:14:00 CST 2017, time=2017-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=160894, encodeId=0a9b1608940f, content=好文,值得借鉴, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5f8c1618851, createdName=Kim.yu, createdTime=Wed Dec 07 10:44:13 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1891276, encodeId=e32e18912e68b, content=<a href='/topic/show?id=25b0102e2df' target=_blank style='color:#2F92EE;'>#JCO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10272, encryptionId=25b0102e2df, topicName=JCO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6da1120, createdName=lidong40, createdTime=Wed Dec 07 04:14:00 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90522, encodeId=b36990522af, content=不同的统计方法,差距这么大, beContent=null, objectType=article, channel=null, level=null, likeNumber=164, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160528/IMG5749A60FD120A3124.jpg, createdBy=65fe1709307, createdName=青荷, createdTime=Sun Jun 19 10:23:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1542967, encodeId=e17d154296eea, content=<a href='/topic/show?id=3f53e894718' target=_blank style='color:#2F92EE;'>#统计方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78947, encryptionId=3f53e894718, topicName=统计方法)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=127213510199, createdName=12498761m60暂无昵称, createdTime=Sun Jun 19 00:14:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90437, encodeId=2ba09043e8c, content=好文章,值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sat Jun 18 18:19:00 CST 2016, time=2016-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90221, encodeId=53b290221e0, content=这一个案例非常值得借鉴了,不同的统计策略,差别这么大,尤其是COX回归我们还是要谨慎,最好做时依协变量, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/PiajxSqBRaELaQBNibpuZ0aRbWKgR0puf0vibBuZ7gIkKCXEqibYyJXVhsnibpCuhlqHGWRyvHMdFwm4UXjcpPUFLkw/0, createdBy=2f0f1714785, createdName=wxsession8b50a880, createdTime=Fri Jun 17 11:38:00 CST 2016, time=2016-06-17, status=1, ipAttribution=)]
  6. [GetPortalCommentsPageByObjectIdResponse(id=1632048, encodeId=41681632048ed, content=<a href='/topic/show?id=be9f3422e0e' target=_blank style='color:#2F92EE;'>#医学统计#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=34227, encryptionId=be9f3422e0e, topicName=医学统计)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b87121842187, createdName=30397611, createdTime=Tue Apr 18 21:14:00 CST 2017, time=2017-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=160894, encodeId=0a9b1608940f, content=好文,值得借鉴, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5f8c1618851, createdName=Kim.yu, createdTime=Wed Dec 07 10:44:13 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1891276, encodeId=e32e18912e68b, content=<a href='/topic/show?id=25b0102e2df' target=_blank style='color:#2F92EE;'>#JCO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10272, encryptionId=25b0102e2df, topicName=JCO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6da1120, createdName=lidong40, createdTime=Wed Dec 07 04:14:00 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90522, encodeId=b36990522af, content=不同的统计方法,差距这么大, beContent=null, objectType=article, channel=null, level=null, likeNumber=164, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160528/IMG5749A60FD120A3124.jpg, createdBy=65fe1709307, createdName=青荷, createdTime=Sun Jun 19 10:23:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1542967, encodeId=e17d154296eea, content=<a href='/topic/show?id=3f53e894718' target=_blank style='color:#2F92EE;'>#统计方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78947, encryptionId=3f53e894718, topicName=统计方法)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=127213510199, createdName=12498761m60暂无昵称, createdTime=Sun Jun 19 00:14:00 CST 2016, time=2016-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90437, encodeId=2ba09043e8c, content=好文章,值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sat Jun 18 18:19:00 CST 2016, time=2016-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=90221, encodeId=53b290221e0, content=这一个案例非常值得借鉴了,不同的统计策略,差别这么大,尤其是COX回归我们还是要谨慎,最好做时依协变量, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/PiajxSqBRaELaQBNibpuZ0aRbWKgR0puf0vibBuZ7gIkKCXEqibYyJXVhsnibpCuhlqHGWRyvHMdFwm4UXjcpPUFLkw/0, createdBy=2f0f1714785, createdName=wxsession8b50a880, createdTime=Fri Jun 17 11:38:00 CST 2016, time=2016-06-17, status=1, ipAttribution=)]
    2016-06-18 沉心多思

    好文章,值得学习

    0

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    2016-06-17 wxsession8b50a880

    这一个案例非常值得借鉴了,不同的统计策略,差别这么大,尤其是COX回归我们还是要谨慎,最好做时依协变量

    0

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