Table 4.

Meta-analysis results.

Diameter range	Detection percentage	95% confidence interval	I2	P-value heterogeneity
1 mm	65%	54–76	83.27	0.01
2 mm	81%	78–85	87.83	0.00
2.5 mm	86%	83–89	91.38	0.00
3 mm	91%	88–93	93.44	0.00
4 mm	96%	94–97	90.47%	0.00