I’m an undergrad doing a meta-analysis on the economic benefits of Fairtrade for smallholder farmers. The studies in my meta-analysis only report the means and sample sizes. Can I still perform a meta analysis? Any help would be greatly appreciated.
Attached is a research article which may answer my question but I’m struggling to understand it [research article](https://bmcmedresmethodol.biomedcentral.com/articles/10.1186/s12874-018-0483-0