Table 4.

Comparison of perioperative period characteristics between groups

Outcome	VATS group	TL group	t/χ2	P
Surgery duration (minutes)	151.90 ± 28.04	165.00 ± 36.01	1.408	0.165
Intraoperative blood loss (ml)	196.43 ± 76.83	235.31 ± 64.96	1.982	0.053
Postoperative hospital stay (days)	6.19 ± 1.69	8.22 ± 2.55	3.207	0.002**
Quantity of lymph node dissection	12.24 ± 2.34	13.22 ± 1.86	1.613	0.116
Time to first activity out of bed (hours)	20.57 ± 7.72	26.81 ± 9.27	2.556	0.014*
Chest drainage duration (days)	4.24 ± 1.04	5.22 ± 1.29	2.913	0.005**
Postoperative drainage volume (ml)	642.86 ± 158.18	787.81 ± 211.55	2.683	0.010*
Postoperative complications
Total number of complications	4 (3 patients)	27 (14 patients)
Atrial fibrillation	1	5	0.605	0.437
Persistent air leak (>5 days)	2	6	0.276	0.599
Lobar atelectasis	1	5	0.605	0.437
Pneumonia	0	4	1.330	0.249
Prolonged mechanical ventilation	0	2	0.186	0.666
Tracheostomy	0	1	0.000	1.000
Wound infection	0	2	0.186	0.666
Recurrent laryngeal nerve palsy	0	2	0.186	0.666
No complications	18 (85.71%)	18 (56.25%)	5.052	0.025*

^*P< 0.05;

^**P< 0.01; TL, lobectomy by thoracotomy; VATS, Video-assisted thoracoscopic lobectomy.