Comparison of means

Hi this is probably a very stupid question but could anyone please help?

I'm conducting a systematic review/meta analysis and have extracted all of the N and total mean scores and SD for a specific questionnaire. So in total I have 23 means/sd from the studies I have included in my review. Is there any way in which I can statistics compare these mean scores? I keep coming back to one way ANOVA but not sure if thats right? alsoI don't have access to the raw data for the 23 studies.