Fig. 6. Comparison of subsequent surgery rates between minimally invasive and open lumbar spinal fusion. Heterogeneity: Removal [τ2=1.204; χ2=2.938, df=2 (p=0.230); I2=31.9%], reoperation [τ2=0.774; χ2=3.965, df=3 (p=0.265); I2=24.3%], revision [τ2=0.000; χ2=1.154, df=3 (p=0.764); I2=0.0%], overall subsequent surgery rates [τ2=0.000; χ2=8.565, df=10 (p=0.574); I2=0.0%]. df, degrees of freedom; OR, odds ratio; CI, confidence interval.
