Table 4 Perioperative outcomes in the lobectomy cohort before and after propensity score matching
Clinical records | Before PSM | After PSM | ||||||
|---|---|---|---|---|---|---|---|---|
Uniportal cohort (n = 35) | Three-port cohort (n = 317) | Z/X2-value | p-value | Uniportal cohort (n = 33) | Three-port cohort (n = 33) | Z/X2-value | p-value | |
Intraoperative blood loss (mL) | 50(20, 83) | 83(30, 83) | —2.72 | 0.007e | 50(20, 83) | 83(30, 83) | —1.94 | 0.05 |
Operation time (min) | 125(103, 150) | 120(95, 164) | —0.19 | 0.85 | 125(101, 148) | 119(92, 161) | —0.70 | 0.48 |
Conversion to thoracotomy rate | 4(11.40%) | 19(6.00%) | 0.76 | 0.38 | 4(12.10%) | 2(6.10%) | 0.18 | 0.67 |
Lymph node dissection | 3.21 | 0.20 | 4.30 | 0.12 | ||||
Nodal dissection | 35(100.00%) | 302(95.30%) | 33(100.00%) | 30(90.90%) | ||||
Nodal sampling | 0(0.00%) | 8(2.50%) | 0(0.00%) | 1(3.00%) | ||||
No nodal dissection | 0(0.00%) | 7(2.20%) | 0(0.00%) | 2(6.10%) | ||||
Overall number of lymph nodes dissected | 13(7, 19)a | 11(7, 16)b | —0.97 | 0.33 | 13(10, 20)c | 9(5, 14)d | —2.69 | 0.007e |
Overall number of lymph node stations dissected | 6(5, 7)a | 5(4, 6)b | —1.53 | 0.13 | 6(5, 7)c | 6(4, 7)d | —0.71 | 0.48 |
Postoperative thoracic drainage (mL) | ||||||||
Within postoperative 3 days | 500(350, 810) | 590(340, 870) | —0.57 | 0.57 | 510(350, 855) | 640(410, 875) | —0.67 | 0.51 |
Total | 660(400, 1190) | 740(350, 1340) | —0.36 | 0.72 | 680(405, 1215) | 700(410, 1265) | —0.16 | 0.87 |
Duration of thoracic drainage (day) | 3(2, 5) | 3(2, 6) | —0.50 | 0.62 | 3(2, 5) | 3(2, 5) | —0.14 | 0.89 |
Postoperative length of stay (day) | 6(4, 10) | 7(5, 10) | —1.60 | 0.11 | 6(4, 10) | 6(4, 9) | —0.32 | 0.75 |
Hospitalization expenses (¥) | 52,405.53 (47,672.97, 56,537.34) | 56,537.34 (494,998.99, 63,900.08) | —1.83 | 0.07 | 52,405.53 (47,571.81, 57,704.24) | 52,791.46 (48,122.71, 60,843.34) | —0.07 | 0.94 |