表 3.

两组患者围手术期比较（Mean±SD）

Perioperative comparison between the two groups (Mean±SD)

Index	Precision group (n=30)	Traditional group (n=30)	t	P
NRS: numerical rating scale.
Intraoperative bleeding volume (mL)	23.17±13.80	28.00±17.30	-1.196	0.236
Postoperative hospital stay (d)	4.63±2.12	5.03±1.82	-0.781	0.438
Operation time	113.07±23.78	142.33±52.78	-2.769	0.008
Postoperative drainage (mL)	270.33±174.26	294.83±169.55	-0.552	0.583
Postoperative time with tube (d)	3.70±1.36	4.10±1.78	-0.973	0.335
Number of lymph node dissection	4.83±3.99	4.57±5.217	0.222	0.825
Number of lymph node dissection stations	2.30±1.51	2.20±1.73	0.238	0.812
Postoperative 24 h NRS score	3.53±0.62	3.70±0.65	-1.008	0.317
Postoperative 72 h NRS score	2.87±0.68	2.97±0.89	-0.489	0.627