I’m currently running a meta-analysis mostly including case-series. Could you please suggest me the best tool to assess the risk of bias in such studies? I found a scale that you can find as attachment. Thank you
Piergiorgio Muriana you could use also the Newcastle-Ottawa Scale ( http://www.ohri.ca/programs/clinical_epidemiology/oxford.asp) or ROBINS-I tool ( https://methods.cochrane.org/bias/risk-bias-non-randomized-studies-interventions - for non-RCT comparing at least