Table 4.

Comparison of perioperative evaluation indexes between the two groups ( $\overline{x}\pm s$ ).

Observational indicators	Group A (n = 75)	Group B (n = 59)	Test value (t/U/χ2)	p
Follow-up duration (months)	63.24 ± 9.16	64.05 ± 9.74	−0.47	0.64
Operation time (mins)	193.79 ± 50.23	218.69 ± 56.78	−2.57	0.01
Amount of bleeding (mL)	817.33 ± 455.93	1111.86 ± 586.07	−3.11	<0.01
Blood transfusion or not (yes/no)	47/28	47/12	4.55	0.03
VAS score at the last follow-up	1.147 ± 0.833	0.780 ± 0.911	2.24	0.14