46 - R中进行meta分析
作者:
Hello育种 | 来源:发表于
2022-06-15 16:06 被阅读0次
来自:Luke Prendergast的报告
提纲:
![](https://img.haomeiwen.com/i24959989/4d9bec27911d8cc7.png)
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介绍:
![](https://img.haomeiwen.com/i24959989/96a64d8a727f6587.png)
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汇报者的观点:
![](https://img.haomeiwen.com/i24959989/7a1db987d808050f.png)
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家庭作业:
![](https://img.haomeiwen.com/i24959989/11bd889c4a43dbee.png)
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![](https://img.haomeiwen.com/i24959989/1011c78fed280ab8.png)
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会使用2个R包,metafor和meta
![](https://img.haomeiwen.com/i24959989/ee6373043cc3cbe9.png)
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文章例子:
![](https://img.haomeiwen.com/i24959989/8e1c15f466aa7c60.png)
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![](https://img.haomeiwen.com/i24959989/f813c89e848fad06.png)
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![](https://img.haomeiwen.com/i24959989/e73e4ad7adc16c96.png)
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R代码
读入数据
![](https://img.haomeiwen.com/i24959989/0f6b00fd9103a3ad.png)
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估计效应和方差:
使用metafor
![](https://img.haomeiwen.com/i24959989/6e522b3691b391b1.png)
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yi是效应,vi是方差(假设不同分组的方差相同)
![](https://img.haomeiwen.com/i24959989/0858d00daa2e4a5d.png)
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forest
![](https://img.haomeiwen.com/i24959989/e6dcac34402d6ea6.png)
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使用 meta包
![](https://img.haomeiwen.com/i24959989/b421e1ae3d14a5d5.png)
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图示:
![](https://img.haomeiwen.com/i24959989/25d721c006cff237.png)
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第二部分-理论
![](https://img.haomeiwen.com/i24959989/d6b9132f6f197c79.png)
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fixed model
![](https://img.haomeiwen.com/i24959989/135f6ff106622f9f.png)
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![](https://img.haomeiwen.com/i24959989/509989feaed4edf3.png)
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增加权重:
![](https://img.haomeiwen.com/i24959989/930449ca389cdf4b.png)
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![](https://img.haomeiwen.com/i24959989/e634da99d06ce136.png)
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例子:
![](https://img.haomeiwen.com/i24959989/74012cbae9ab6181.png)
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![](https://img.haomeiwen.com/i24959989/1fcfe9b5908b2fd0.png)
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![](https://img.haomeiwen.com/i24959989/9f2962a49625afe6.png)
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问题
![](https://img.haomeiwen.com/i24959989/efcdb898db8599d7.png)
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固定效应:
![](https://img.haomeiwen.com/i24959989/45e3ad18c33fff6d.png)
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使用随机模型
![](https://img.haomeiwen.com/i24959989/1e091733293a5b1a.png)
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结果:
![](https://img.haomeiwen.com/i24959989/3c0fc49b292ffe81.png)
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两个R包的使用
![](https://img.haomeiwen.com/i24959989/2fac72b0f2ecd23c.png)
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两种模型使用的tests不同
![](https://img.haomeiwen.com/i24959989/ff19fc7fc84db0c0.png)
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![](https://img.haomeiwen.com/i24959989/67e752e43c5aaade.png)
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不能正确的输出REM的分析结果,解决方法如下:
![](https://img.haomeiwen.com/i24959989/6a47383a10f9b2be.png)
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![](https://img.haomeiwen.com/i24959989/c2056f919ace249f.png)
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![](https://img.haomeiwen.com/i24959989/38a0a0a2aad147ff.png)
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4 错误的推断异质性
![](https://img.haomeiwen.com/i24959989/1533e487190cdab8.png)
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新的方法:
![](https://img.haomeiwen.com/i24959989/98d0bf2f77b1396b.png)
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![](https://img.haomeiwen.com/i24959989/73270b9dd6abb59a.png)
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不同模型选择,会出现不同的结果:
![](https://img.haomeiwen.com/i24959989/94be2e767743de8d.png)
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![](https://img.haomeiwen.com/i24959989/46a8db6cbdbbc278.png)
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![](https://img.haomeiwen.com/i24959989/05daefe5d4be4848.png)
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第五个问题-查看每个试验的贡献
![](https://img.haomeiwen.com/i24959989/05b159821cbe0493.png)
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第6个问题- 使用哪一种estimator
![](https://img.haomeiwen.com/i24959989/0539a05e5c3e5a6b.png)
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解决:
![](https://img.haomeiwen.com/i24959989/cae5a526ba4f03a2.png)
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测试:
![image.png](https://img.haomeiwen.com/i24959989/82d3595ab6931b54.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/](https://img.haomeiwen.com/i24959989/12fa9ba21b6ac5b9.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
第7个问题-发表文章的偏差
![](https://img.haomeiwen.com/i24959989/f9779d7a0bfb7e03.png)
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![](https://img.haomeiwen.com/i24959989/310f3af3cf65b3a1.png)
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参考文献:
![](https://img.haomeiwen.com/i24959989/98be0c1f51c770c3.png)
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forest()函数
![](https://img.haomeiwen.com/i24959989/c34021d68c0e31e0.png)
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本文标题:46 - R中进行meta分析
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