| 查看: 392 | 回复: 0 | |||
[求助]
求<introduction to Meta-analysis>中2句话怎么理解
|
|
求<introduction to Meta-analysis>中以下斜体字的2句话怎么理解 1关于标准均数差的 The standardized mean difference can be considered as being comparable across studies based on either of two arguments (Hedges and Olkin, 1985). If the outcome measures in all studies are linear transformations of each other, the standardized mean difference can be seen as the mean difference that would have been obtained if all data were transformed to a scalewhere the standard deviation within-groups was equal to 1.0. 2关于风险比 比数比 风险差这几个效应量的使用 The risk ratio and odds ratio are relative measures, and therefore tend to be relatively insensitive to differences in baseline events. By contrast, the risk difference is an absolute measure and as such is very sensitive to the baseline risk. If we wanted to test a compound and believed that it reduced the risk of an event by 20%regardless of the baseline risk, then by using a ratio index we would expect to see the same effect size across studies even if the baseline risk varied from study to study. The risk difference, by contrast, would be higher in studies with a higher base rate    |
回复此楼» 猜你喜欢
时间戳又变了8-15
已经有23人回复
-
欢迎发来filecode的Mz6后的代码验证其规律
已经有61人回复
-
filecode=后面第一个是大写字母
已经有7人回复
-
有时候，自然基金真的不能太认真 （我的申报经验）
已经有10人回复
-
filecode
已经有12人回复
-
小木虫上这么多卖论文的，真有人买论文么？感觉没必要啊
已经有13人回复
-
哪位老哥知道今年的国自然具体哪一天放榜？
已经有7人回复
-
关于Filecode分析方法
已经有13人回复
-
各位道友，我要去昆明玩几天，回来见。
已经有8人回复
-
咱们一起用铁证分析2026国家社科基金中标与否
已经有22人回复
