Table 3. Subgroup analyses of residual tumor rate based on tumor size.

Variable	No. (%)		P
	Residual group	Non-residual group
Tumor size T (cm)			<0.001
T ≤1	2 (22.2%)	7 (77.8%)
1< T ≤2	38 (65.5%)	20 (34.5%)
T >2	17 (100%)	0 (0%)