Minor differences were found between AMSTAR 2 and ROBIS in the assessment of systematic reviews including both randomized and nonrandomized studies

Objective To compare A Measurement Tool to Assess Systematic Reviews (AMSTAR 2) with a tool to assess risk of bias in systematic reviews (ROBIS) in terms of validity, reliability, and applicability. Study Design and Setting We analyzed 30 systematic reviews (SRs) that included randomized and nonrandomized studies, with Cochrane and non-Cochrane SRs sampled in 1:1 ratio. Four reviewers assessed independently all 30 SRs with AMSTAR 2, followed by...