Where you have all aggregate level data, eg data for a set of 100 studies, and partly missing summary statistics (such as a mean and standard decision for age), is there any specific advice for imputing the standard deviations?
A log transformation makes sense to me since the SD must be positive, but is there anything else we should think about?
Where you have all aggregate level data, eg data for a set of 100 studies, and partly missing summary statistics (such as a mean and standard decision for age), is there any specific advice for imputing the standard deviations? A log transformation makes sense to me since the SD must be positive, but is there anything else we should think about?