covariate(covariate是控制變量嗎)

如何用STATA對連續性變量進行meta回歸分析

在stata中有個metareg指令，好像可以對連續變量進行回歸分析。

附件中是一篇pdf文檔，主要介紹stata中關于meta分析的指令。跟大家分享一下。

裡面在提到metareg指令時，列舉了以下三個列子：

1：metareg logor covariate1 covariate2, wsse(selogor)

2: metareg logor dur,wsvar(vlor) bs(eb)noit

3: metareg meandiff qual avchol, wsse(sediff)bs(ml)tol(5)l(90)

協變量是什麼

Covariates are random variables you treat as concomitants (see Concomitant Variable) or as other influential variables that also affect the response. Covariates in DOE are uncontrolled variables that influence the response but do not interact with any of the other factors being tested at the time. Therefore, if they are present during the experiment then they would show as measurements of error.

covariate

In statistics, a covariate is a variable that is possibly predictive of the outcome under study. A covariate may be of direct interest or be a confounding variable or effect modifier.