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combining means for multiple outcomes - one group
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Hello,I am looking for a formula to combine multiple outcomes for one group. For example, some of the studies I'm including in my analysis give separate results for each subscale of the main outcome…Continue

Started this discussion. Last reply by Camilla Loveridge Mar 19, 2016.

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combining means for multiple outcomes - one group

Hello,I am looking for a formula to combine multiple outcomes for one group. For example, some of the studies I'm including in my analysis give separate results for each subscale of the main outcome (e.g., aggression) for each group, and I need to combine their Means and Standard Deviations so that I get one outcome for each group.I have the formula for combining subgroups into one group (SStotal/Sum of n-1) but haven't found anything for combining means and SDs for one grp.Thank you very much!See More
Jul 14, 2016
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Camilla Loveridge replied to Attart's discussion combining means for multiple outcomes - one group
"Hello,  I am having similar difficulties re this issue. I would like to combine the 3 sub scales of the Impact of Event Scale-Revised to calculate a total score. I have been told that I can simply work out the sum of standard variances by…"
Mar 19, 2016
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Aug 26, 2013
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Nov 25, 2012
Adam Hafdahl replied to Attart's discussion combining means for multiple outcomes - one group
"I recently responded to a similar question posted to the SEMNET email discussion list (http://www2.gsu.edu/~mkteer/semnet.html).  The gist of that response was that correlations between subscales should probably be used to obtain any type of…"
Nov 19, 2012
Blair T. Johnson replied to Attart's discussion combining means for multiple outcomes - one group
"Because different subscales routinely have different SDs, the safest thing is to calculate a standardized mean difference effect size for each subscale and then average afterwards to form your aggregate. Some would argue that you could correct the…"
Nov 18, 2012
Attart posted a discussion

combining means for multiple outcomes - one group

Hello,I am looking for a formula to combine multiple outcomes for one group. For example, some of the studies I'm including in my analysis give separate results for each subscale of the main outcome (e.g., aggression) for each group, and I need to combine their Means and Standard Deviations so that I get one outcome for each group.I have the formula for combining subgroups into one group (SStotal/Sum of n-1) but haven't found anything for combining means and SDs for one grp.Thank you very much!See More
Nov 18, 2012
3 Comments
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