Table 2. The surgical characteristics and lymph node harvest between SP and MP group.

Variable	SP VATS (n=166)	MP VATS (n=292)	P value
No. LN harvest (median)	15	14	0.278
No. LN station harvested (median)	5	5	0.564
Pleura adhesion
Dense and extensive	12 (7.2%)	17 (5.8%)	0.173
Moderate and membraneous	36 (21.7%)	45 (15.4%)
No or limited	118 (71.1%)	230 (78.8%)
Operation time (min)	171.61±36.31	162.43±51.04	0.042
R0 resection	151 (98.7%)	261 (98.1%)	0.660
Operation blood loss (mL)
<100	102 (61.4%)	165 (56.5%)	<0.001
100–500	42 (25.3%)	118 (40.4%)
>500	22 (13.2%)	9 (3.1%)
Conversion
Yes	3 (1.8%)	20 (6.8%)	0.018
No	163 (98.2%)	272 (93.2%)

LN, lymph node.