Meta-analysis

noortjemateijsen

Hi everyone,

I am currently doing a meta-analysis and still have a bunch of questions.

I am doing a meta-analysis on the pleasantness of a specific type of touch. In each study, participants rated the pleasantness of this type of touch on a scale. I already converted each scale to be equal. I now have 14 studies with a mean and a standard deviation. I have no control group and thus do not want to investigate a mean difference. I just want to look at all those means and get one mean out of this. Is this possible and how do I have to this?

Besides that, I want to compare this mean that comes out of my meta-analysis to some other data, is this possible?

Thank you for helping!

EJ

Hi Noortje,

Well, if you just plug in the numbers you'll automatically get a test that compares against zero (which is not what you are interested in, as it makes no sense). But you will also get a confidence interval, which would be what you are looking for. Note that JASP wants the standard error, not the standard deviation.

For the comparison to new data, I guess you can add the new study and include a factor variable to denote whether it is "old" or "new", which is then tested.

Cheers,

E.J.