Hi all,

I am wanting to perform a meta-analysis and some of the articles included only provide baseline and post-intervention mean and standard deviation values for the group. Hence, I´m wanting to calculate the mean and standard deviation of the difference between pre-intervention and post-intervention values within that group. I´ve attached an image to make the explanation easier: if I only have the first 2 columns, is it possible to calculate the 3rd column?

I wonder if there is any way (in STATA or any other software) that this may be calculated.

Thank you very much in advance for your help.

I am wanting to perform a meta-analysis and some of the articles included only provide baseline and post-intervention mean and standard deviation values for the group. Hence, I´m wanting to calculate the mean and standard deviation of the difference between pre-intervention and post-intervention values within that group. I´ve attached an image to make the explanation easier: if I only have the first 2 columns, is it possible to calculate the 3rd column?

I wonder if there is any way (in STATA or any other software) that this may be calculated.

Thank you very much in advance for your help.

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