Application of a glasses-free 3D laparoscopic system in radical gastrointestinal cancer surgery

Table 6 Surgical outcomes and safety profile, n (%)

Characteristic	Naked-eye 3D group (n = 35)	Glasses 3D group (n = 130)	P value
Operative time (minute)	165 (135, 205)	155 (125, 185)	< 0.05
Intraoperative blood loss (mL)	30 (15, 70)	20 (10, 50)	< 0.05
Conversion to open surgery	0 (0)	0 (0)
30-day mortality	0 (0)	0 (0)
30-day reoperation	0 (0)	0 (0)
Complication rate	8 (22.9)	15 (11.5)	< 0.05
Postoperative first anal exhaust time (day)	2.5 (2, 3)	2 (1, 3)	< 0.05
Time of first postoperative intake of semiliquid food (day)	5.5 (5, 7)	5 (4, 6)	< 0.05
Postoperative hospitalization time (day)	9 (8, 11)	8 (7, 9)	< 0.05
Lymph node dissection number	17 (14, 20)	21 (18, 24)	< 0.05
Positive number of lymph nodes	2 (0, 5)	1 (0, 3)	< 0.05
Total number of lymph node dissection	16 (13, 19)	18 (15, 22)	< 0.05
Number of qualified lymph node dissection	32 (91.4)	126 (96.9)	< 0.05