Fig. 3

A The funnel plot showing no evidence of publication bias, statistically supported by Egger’s regression test. B The influence analysis plot, showing different influence diagnostics including: Externally Standardized Residuals, DFFITS Value, Cook’s Distance, Covariance Ratio, Leave-One-Out τ2 and Q Values, and Hat Value and Study Weight. Ceave-One-Out sensitivity analysis result, sorted by effect sizes from low to high. D Leave-One-Out sensitivity analysis result, sorted by heterogeneity as measured by I2 from low to high