Hi Statalisters,

I am running a regression analysis to compare two groups on my outcome y (while adjusting for some covariates) while taking into account clustering using xtmixed in Stata 11.

I would also like to calculate the Cohen's d value associated with this analysis. Normally I would calculate it as:

d = abs(mean_group1-mean_group2)/pooled sd

how can I obtain the pooled standard error? should I account for the clustering to estimate it?

Any help would be appreciated.

Thanks,

Fran

I am running a regression analysis to compare two groups on my outcome y (while adjusting for some covariates) while taking into account clustering using xtmixed in Stata 11.

I would also like to calculate the Cohen's d value associated with this analysis. Normally I would calculate it as:

d = abs(mean_group1-mean_group2)/pooled sd

how can I obtain the pooled standard error? should I account for the clustering to estimate it?

Any help would be appreciated.

Thanks,

Fran

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