6.

术中、术后观察项目情况[n(%)]

Intraperative and postoperative data [n(%)]

	SP VATS-L (n=372)		P	SP VATS-S (n=45)		P	SP VATS-E (n=139)		P
	E (n=124)	NE (n=248)		E (n=15)	NE (n=30)		L (n=67)	S (n=15)
VAS: visual analogue scale.
Operation time (Mean±SD, min)	191.75±5.09	181.81±2.93	0.07	211.93±17.41	202.77±8.58	0.60	194.81±8.09	211.93±17.41	0.37
Intraoperative blood loss (Mean±SD, mL)	75.60±49.43	69.42±47.15	0.24	94.67±18.62	66.83±8.59	0.13	74.55±6.19	94.67±18.62	0.20
Numbers of mediastinal nodal stations (Mean±SD)	7.72±0.15	7.52±0.10	0.28	5.60±0.35	2.37±0.33	0.66	7.61±0.21	5.60±0.35	0.00
Numbers of dissected lymph nodes	20.91±0.68	19.87±0.56	0.26	15.40±2.64	11.57±1.59	0.63	20.39±0.97	15.40±2.64	0.00
Postoperative VAS pain score	3.02±0.11	3.10±0.08	0.55	2.87±0.26	2.93±0.24	0.86	3.03±0.15	2.87±0.26	0.63
Postoperative complications	9 (7.26%)	17 (6.85%)	0.85	3 (20.00%)	3 (10.00%)	0.35	4 (5.97%)	3 (20.00%)	0.20
Lung infection	5 (4.03%)	5 (2.02%)	0.08	2 (13.33%)	1 (3.33%)	0.21	4 (5.97%)	2 (13.33%)	0.32
Postoperative atrial fibrillation	3 (2.42%)	4 (1.61%)	0.59	1 (6.67%)	0 (0.00%)	0.15	0 (0.00%)	1 (6.67%)	0.03
Vein thrombosis of lower limbs	1 (0.81%)	1 (0.40%)	0.62	1 (6.67%)	1 (3.33%)	0.61	0 (0.00%)	1 (6.67%)	0.03
Pulmonary embolism	1 (0.81%)	0 (0.00%)	0.16	0 (0.00%)	0 (0.00%)	1	0 (0.00%)	0 (0.00%)	1.00
Chylothorax	0 (0.00%)	3 (1.21%)	0.22	0 (0.00%)	0 (0.00%)	1	0 (0.00%)	0 (0.00%)	1.00
Postoperative leakage	3 (2.42%)	6 (2.42%)	1.00	0 (0.00%)	1 (3.33%)	0.48	0 (0.00%)	0 (0.00%)	1.00
Postoperative drainage duration (Mean±SD, d)	6.65±0.74	5.73±0.94	0.52	5.00±0.74	4.17±0.47	0.33	7.00±1.31	5.00±0.74	0.48
Postoperative drainage volume(Mean±SD, mL)	1, 145.60±103.13	838.02±67.02	0.06	853.53±177.04	572.57±135.40	0.23	1, 150.15±140.02	853.53±177.04	0.34
Duration of postoperative hospital stay (Mean±SD, d)	3.02±1.22	3.10±1.30	0.55	5.04±1.30	4.70±0.48	0.24	3.18±1.32	5.04±1.30	0.96
Costs (Mean±SD, thousands yuan)	61.51±4.93	54.92±0.97	0.08	7.21±5.23	5.91±1.74	0.06	70.06±5.23	61.20±5.22	0.34