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sdm-help-list > Is there a limit for sample size of studies？
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Nov 25, 2016 06:11 AM | Wei Lei
Is there a limit for sample size of studies？
Hi SDM team，
How the number of subjects weighted in a SDM effect-size compute? I got several studies fit my include criteria,but with small sample size(case-reports with only one subject), is there someway I could compute a effect size from these studies? Or i have to exclude those studies? Is there a limit for sample size of studies？
Best!
Wei
How the number of subjects weighted in a SDM effect-size compute? I got several studies fit my include criteria,but with small sample size(case-reports with only one subject), is there someway I could compute a effect size from these studies? Or i have to exclude those studies? Is there a limit for sample size of studies？
Best!
Wei
Dec 9, 2016 08:12 AM | Joaquim Radua
RE: Is there a limit for sample size of studies？
Dear Wei,
strictly speaking the sample size could be very small (though not 1 as variance cannot be estimated). However, I would suggest discarding studies with small sample sizes. A sample size limit commonly used is 10, though you may want to use larger limits.
With the best wishes,
Joaquim
strictly speaking the sample size could be very small (though not 1 as variance cannot be estimated). However, I would suggest discarding studies with small sample sizes. A sample size limit commonly used is 10, though you may want to use larger limits.
With the best wishes,
Joaquim