Baidu
map

SPSS进行相关分析(Pearson、Spearman、卡方检验)

2014-05-06 MedSci MedSci原创

一、相关分析方法的选择及指标体系 (一)两个连续变量的相关分析 1、Pearson相关系数 最常用的相关系数,又称积差相关系数,取值-1到1,绝对值越大,说明相关性越强。该系数的计算和检验为参数方法,适用条件如下: (1)两变量呈直线相关关系,如果是曲线相关可能不准确。 (2)极端值会对结果造成较大的影响 (3)两变量符合双变量联合正态分布。 2、Spearman秩相关系数 对原始

一、相关分析方法的选择及指标体系 

(一)两个连续变量的相关分析 

1、Pearson相关系数 

最常用的相关系数,又称积差相关系数,取值-1到1,绝对值越大,说明相关性越强。该系数的计算和检验为参数方法,适用条件如下: 

(1)两变量呈直线相关关系,如果是曲线相关可能不准确。 

(2)极端值会对结果造成较大的影响 

(3)两变量符合双变量联合正态分布。 

2、Spearman秩相关系数 


对原始变量的分布不做要求,适用范围较Pearson相关系数广,即使是等级资料,也可适用。但其属于非参数方法,检验效能较Pearson系数低。
  
(二)有序分类变量的相关分析


有序分类变量的相关性又称为一致性,即行变量等级高的列变量等级也高,如果行变量等级高而列变量等级低,则称为不一致。

常用的统计量有:Gamma、Kendall的tau-b、Kendall的tau-c等。

最常用的为卡方检验,用于评价两个无序分类变量的相关性。根据卡方值衍生出来的指标还有列联系数、Phi、Cramer的V、Lambda系数、不确定系数等。
OR、RR也是衡量两变量之间的相关程度的指标。

二、SPSS相关操作 

SPSS的相关分析散布在交叉表和相关分析两个模块中。 

(1)交叉表过程
如下图:




以上的指标很全面,解释如下: 

(1)“卡方”复选框:为常用的卡方检验,适用于两个无序分类变量的检验。 

(2)“相关性”复选框:适用于两个连续性变量的相关分析,给出两变量的Pearson相关系数和Spearman相关系数。 

(3)“有序”复选框组:包含了一组反映有序分类变量一致性的指标,只能用于两变量均为有序分类变量的情况。 

(4)“名义”复选框组:包含一组分类变量相关性的指标,有序和无序分类时都可使用,但变量为有序时,检验效能没有“有序”复选框组中的统计量高。 

(5)Kappa:为内部一致性系数。 

(6)风险:给出OR或RR值。 

(7)McNemar:为配对卡方检验。
  
(二)“相关”过程

如下图:



以计算Pearson、Kendall的tau-b、Spearman三种相关系数。


版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (6)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=22445, encodeId=fdfd22445ae, content=生手,不太懂,但是多琢磨几遍吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=117, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6bc1615337, createdName=hsvs, createdTime=Sat May 02 21:10:00 CST 2015, time=2015-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=20010, encodeId=dc4a20010aa, content=受用,非常不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49f21621039, createdName=zjh20093489, createdTime=Thu Apr 09 17:25:00 CST 2015, time=2015-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794255, encodeId=bb391e942552c, content=<a href='/topic/show?id=78181659647' target=_blank style='color:#2F92EE;'>#SPEAR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16596, encryptionId=78181659647, topicName=SPEAR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f54230, createdName=xlysu, createdTime=Thu Jul 31 13:53:00 CST 2014, time=2014-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725602, encodeId=3ccc1e256029a, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Sat Oct 04 08:53:00 CST 2014, time=2014-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=9510, encodeId=fa7c951032, content=hao\非常不错的讲座, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM68e6IGzO8R3Dg3Vq9zJicIDZQxQmORIMf3X5b65ZTKjqag3Jw1xjr7PyOadRb3d3F4Boo2brrF2MA/0, createdBy=967f94952, createdName=ishow, createdTime=Sun May 18 12:09:00 CST 2014, time=2014-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1599772, encodeId=63451599e72f7, content=<a href='/topic/show?id=3e76365110a' target=_blank style='color:#2F92EE;'>#卡方检验#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36511, encryptionId=3e76365110a, topicName=卡方检验)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb2618750443, createdName=ycmayy, createdTime=Thu May 08 03:53:00 CST 2014, time=2014-05-08, status=1, ipAttribution=)]
    2015-05-02 hsvs

    生手,不太懂,但是多琢磨几遍吧

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=22445, encodeId=fdfd22445ae, content=生手,不太懂,但是多琢磨几遍吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=117, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6bc1615337, createdName=hsvs, createdTime=Sat May 02 21:10:00 CST 2015, time=2015-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=20010, encodeId=dc4a20010aa, content=受用,非常不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49f21621039, createdName=zjh20093489, createdTime=Thu Apr 09 17:25:00 CST 2015, time=2015-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794255, encodeId=bb391e942552c, content=<a href='/topic/show?id=78181659647' target=_blank style='color:#2F92EE;'>#SPEAR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16596, encryptionId=78181659647, topicName=SPEAR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f54230, createdName=xlysu, createdTime=Thu Jul 31 13:53:00 CST 2014, time=2014-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725602, encodeId=3ccc1e256029a, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Sat Oct 04 08:53:00 CST 2014, time=2014-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=9510, encodeId=fa7c951032, content=hao\非常不错的讲座, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM68e6IGzO8R3Dg3Vq9zJicIDZQxQmORIMf3X5b65ZTKjqag3Jw1xjr7PyOadRb3d3F4Boo2brrF2MA/0, createdBy=967f94952, createdName=ishow, createdTime=Sun May 18 12:09:00 CST 2014, time=2014-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1599772, encodeId=63451599e72f7, content=<a href='/topic/show?id=3e76365110a' target=_blank style='color:#2F92EE;'>#卡方检验#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36511, encryptionId=3e76365110a, topicName=卡方检验)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb2618750443, createdName=ycmayy, createdTime=Thu May 08 03:53:00 CST 2014, time=2014-05-08, status=1, ipAttribution=)]
    2015-04-09 zjh20093489

    受用,非常不错!

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=22445, encodeId=fdfd22445ae, content=生手,不太懂,但是多琢磨几遍吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=117, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6bc1615337, createdName=hsvs, createdTime=Sat May 02 21:10:00 CST 2015, time=2015-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=20010, encodeId=dc4a20010aa, content=受用,非常不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49f21621039, createdName=zjh20093489, createdTime=Thu Apr 09 17:25:00 CST 2015, time=2015-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794255, encodeId=bb391e942552c, content=<a href='/topic/show?id=78181659647' target=_blank style='color:#2F92EE;'>#SPEAR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16596, encryptionId=78181659647, topicName=SPEAR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f54230, createdName=xlysu, createdTime=Thu Jul 31 13:53:00 CST 2014, time=2014-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725602, encodeId=3ccc1e256029a, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Sat Oct 04 08:53:00 CST 2014, time=2014-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=9510, encodeId=fa7c951032, content=hao\非常不错的讲座, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM68e6IGzO8R3Dg3Vq9zJicIDZQxQmORIMf3X5b65ZTKjqag3Jw1xjr7PyOadRb3d3F4Boo2brrF2MA/0, createdBy=967f94952, createdName=ishow, createdTime=Sun May 18 12:09:00 CST 2014, time=2014-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1599772, encodeId=63451599e72f7, content=<a href='/topic/show?id=3e76365110a' target=_blank style='color:#2F92EE;'>#卡方检验#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36511, encryptionId=3e76365110a, topicName=卡方检验)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb2618750443, createdName=ycmayy, createdTime=Thu May 08 03:53:00 CST 2014, time=2014-05-08, status=1, ipAttribution=)]
    2014-07-31 xlysu
  4. [GetPortalCommentsPageByObjectIdResponse(id=22445, encodeId=fdfd22445ae, content=生手,不太懂,但是多琢磨几遍吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=117, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6bc1615337, createdName=hsvs, createdTime=Sat May 02 21:10:00 CST 2015, time=2015-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=20010, encodeId=dc4a20010aa, content=受用,非常不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49f21621039, createdName=zjh20093489, createdTime=Thu Apr 09 17:25:00 CST 2015, time=2015-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794255, encodeId=bb391e942552c, content=<a href='/topic/show?id=78181659647' target=_blank style='color:#2F92EE;'>#SPEAR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16596, encryptionId=78181659647, topicName=SPEAR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f54230, createdName=xlysu, createdTime=Thu Jul 31 13:53:00 CST 2014, time=2014-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725602, encodeId=3ccc1e256029a, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Sat Oct 04 08:53:00 CST 2014, time=2014-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=9510, encodeId=fa7c951032, content=hao\非常不错的讲座, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM68e6IGzO8R3Dg3Vq9zJicIDZQxQmORIMf3X5b65ZTKjqag3Jw1xjr7PyOadRb3d3F4Boo2brrF2MA/0, createdBy=967f94952, createdName=ishow, createdTime=Sun May 18 12:09:00 CST 2014, time=2014-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1599772, encodeId=63451599e72f7, content=<a href='/topic/show?id=3e76365110a' target=_blank style='color:#2F92EE;'>#卡方检验#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36511, encryptionId=3e76365110a, topicName=卡方检验)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb2618750443, createdName=ycmayy, createdTime=Thu May 08 03:53:00 CST 2014, time=2014-05-08, status=1, ipAttribution=)]
    2014-10-04 feather89
  5. [GetPortalCommentsPageByObjectIdResponse(id=22445, encodeId=fdfd22445ae, content=生手,不太懂,但是多琢磨几遍吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=117, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6bc1615337, createdName=hsvs, createdTime=Sat May 02 21:10:00 CST 2015, time=2015-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=20010, encodeId=dc4a20010aa, content=受用,非常不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49f21621039, createdName=zjh20093489, createdTime=Thu Apr 09 17:25:00 CST 2015, time=2015-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794255, encodeId=bb391e942552c, content=<a href='/topic/show?id=78181659647' target=_blank style='color:#2F92EE;'>#SPEAR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16596, encryptionId=78181659647, topicName=SPEAR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f54230, createdName=xlysu, createdTime=Thu Jul 31 13:53:00 CST 2014, time=2014-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725602, encodeId=3ccc1e256029a, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Sat Oct 04 08:53:00 CST 2014, time=2014-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=9510, encodeId=fa7c951032, content=hao\非常不错的讲座, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM68e6IGzO8R3Dg3Vq9zJicIDZQxQmORIMf3X5b65ZTKjqag3Jw1xjr7PyOadRb3d3F4Boo2brrF2MA/0, createdBy=967f94952, createdName=ishow, createdTime=Sun May 18 12:09:00 CST 2014, time=2014-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1599772, encodeId=63451599e72f7, content=<a href='/topic/show?id=3e76365110a' target=_blank style='color:#2F92EE;'>#卡方检验#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36511, encryptionId=3e76365110a, topicName=卡方检验)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb2618750443, createdName=ycmayy, createdTime=Thu May 08 03:53:00 CST 2014, time=2014-05-08, status=1, ipAttribution=)]
    2014-05-18 ishow

    hao\非常不错的讲座

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=22445, encodeId=fdfd22445ae, content=生手,不太懂,但是多琢磨几遍吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=117, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6bc1615337, createdName=hsvs, createdTime=Sat May 02 21:10:00 CST 2015, time=2015-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=20010, encodeId=dc4a20010aa, content=受用,非常不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49f21621039, createdName=zjh20093489, createdTime=Thu Apr 09 17:25:00 CST 2015, time=2015-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794255, encodeId=bb391e942552c, content=<a href='/topic/show?id=78181659647' target=_blank style='color:#2F92EE;'>#SPEAR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16596, encryptionId=78181659647, topicName=SPEAR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f54230, createdName=xlysu, createdTime=Thu Jul 31 13:53:00 CST 2014, time=2014-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725602, encodeId=3ccc1e256029a, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Sat Oct 04 08:53:00 CST 2014, time=2014-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=9510, encodeId=fa7c951032, content=hao\非常不错的讲座, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM68e6IGzO8R3Dg3Vq9zJicIDZQxQmORIMf3X5b65ZTKjqag3Jw1xjr7PyOadRb3d3F4Boo2brrF2MA/0, createdBy=967f94952, createdName=ishow, createdTime=Sun May 18 12:09:00 CST 2014, time=2014-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1599772, encodeId=63451599e72f7, content=<a href='/topic/show?id=3e76365110a' target=_blank style='color:#2F92EE;'>#卡方检验#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36511, encryptionId=3e76365110a, topicName=卡方检验)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb2618750443, createdName=ycmayy, createdTime=Thu May 08 03:53:00 CST 2014, time=2014-05-08, status=1, ipAttribution=)]

相关资讯

SPSS进行生存分析的Cox回归模型(比例风险模型)

一、生存分析基本概念 1、事件(Event) 指研究中规定的生存研究的终点,在研究开始之前就已经制定好。根据研究性质的不同,事件可以是患者的死亡、疾病的复发、仪器的故障,也可以是下岗工人的再就业等等。 2、生存时间(Survival time) 指从某一起点到事件发生所经过的时间。生存是一个广义的概念,不仅仅指医学中的存活,也可以是机器出故障前的正常运行时间,或者下岗工人再就业前的待业时间

SPSS进行重复测量的多因素方差分析

1、概述 重复测量数据的方差分析是对同一因变量进行重复测量的一种试验设计技术。在给予一种或多种处理后,分别在不同的时间点上通过重复测量同一个受试对象获得的指标的观察值,或者是通过重复测量同一个个体的不同部位(或组织)获得的指标的观察值。重复测量数据在科学研究中十分常见。 分析前要对重复测量数据之间是否存在相关性进行球形检验。如果该检验结果为P﹥0.05,则说明重复测量数据之间不存在相关性,

SPSS进行两配对样本的非参数检验(Wilcoxon符号秩检验)

一、概述 非参数检验对于总体分布没有要求,因而使用范围更广泛。对于两配对样本的非参数检验,首选Wilcoxon符号秩检验。它与配对样本t检验相对应。 二、问题 为了研究某放松方法(如听音乐)对于入睡时间的影响,选择了10名志愿者,分别记录未进行放松时的入睡时间及放松后的入睡时间(单位为分钟),数据如下笔。请问该放松方法对入睡时间有无影响。 本例可以采用配对样本t检验,但由于样本量少,数据可

SPSS进行两独立样本的非参数检验(Mann-Whitney U)

一、概述     Mann-Whitney U 检验是用得最广泛的两独立样本秩和检验方法。简单的说,该检验是与独立样本t检验相对应的方法,当正态分布、方差齐性等不能达到t检验的要求时,可以使用该检验。其假设基础是:若两个样本有差异,则他们的中心位置将不同。 三、统计操作 二、问题    为了研究某项犯罪的季节性差异,警察记

SPSS进行多个独立样本的非参数检验(Cruskal-Wallis秩和检验)

一、概述     Cruskal-Wallis秩和检验类似于方差分析,用于检验各个样本的总体是否相同,当正太假设和方差齐性不能满足时,可用该检验。 二、问题     某人搜集了三大公司股票每股所能获利的钱数,是比较三家公司所挣的钱是否相同。     SPSS版本为20。三、统计操作 SPS

SPSS进行配对logistic回归(条件logistic回归)分析

一、概述 对病例和对照进行配比能控制影响实验效应的主要非处理因素,可以提高统计分析的效能,可分为1:1,1:n,m:n配对。SPSS中未提供专用的配对logistic回归的功能,通过变换,可以使用其他方法进行分析,常用的就是带有分层的Cox回归模型。 给每一条记录一个虚拟的生存时间,一般默认病例组的生存时间较对照组短,病例算事件发生,对照算作删失,把配对因素算作分层因素,消除配对因素的影响。

Baidu
map
Baidu
map
Baidu
map