I am doing my first systematic review. I have included two different study types; cohort studies and RCTs.
Regarding the quality assessment. What is the best thing to do?
Should i assess the cohorts using e.g. the Newcastle-Ottawa scale and the RCTs using e.g. Cochrane risk-of-bias?
Or is there a combined quality assessment tool for use in these cases where different study types are included?
Is there any gold standard for this?
Thanks in advance