Study quality
Based on the AMSTAR quality assessment tool, the quality of the eligible systematic reviews and meta-analyses ranged from 2 to 10 points, with a median of 5 points (Supplementary Table 3). Most of the included meta-analyses had moderate (n=59, 50.4%) or high (n=34, 29.1%) quality, while the remaining 24 (20.5%) meta-analyses had low quality.