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[R-meta] Calculating standard errors from confidence interval and weights assigned

Wolfgang Viechtbauer 
This aside, the syntax rma(yi, sei, data) is wrong, since the second argument to rma() is 'vi', which is for the *sampling variances* (i.e., the squared standard errors). So, either do rma(yi, sei^2, data) or use the appropriate argument for passing the standard errors, that is, rma(yi, sei=sei, data).

In recent versions of metafor, rma() actually tries to check for this (based on the variable name specified for the 'vi' argument), so syntax like rma(yi, sei) should yield a warning about this.

Best,
Wolfgang

Thread (4 messages)

Win Thu Calculating standard errors from confidence interval and weights assigned Jul 11 Michael Dewey Calculating standard errors from confidence interval and weights assigned Jul 12 Wolfgang Viechtbauer Calculating standard errors from confidence interval and weights assigned Jul 12 Win Thu Calculating standard errors from confidence interval and weights assigned Jul 12