Table 1 Demographics and Clinical Data before PSM and after PSM
Before PSM | After PSM | |||||
|---|---|---|---|---|---|---|
Variables | Group B N (%)n = 296 | Group S N (%)n = 49 | P | Group B N (%)n = 41 | Group S N (%)n = 41 | P |
Gender | 0.090 | 0.305 | ||||
Male | 228(77.0%) | 43(87.7%) | 40 | 38 | ||
Female | 68(23.0%) | 6(12.3%) | 1 | 3 | ||
Age | 61.0 ± 9.7 | 61.4 ± 8.01 | 0.802 | 61.9 ± 9.0 | 61.6 ± 7.9 | 0.867 |
Smoking | 0.760 | 1.000 | ||||
Yes | 160(54.1%) | 28(57.1%) | 19 | 19 | ||
No | 136(45.9%) | 21(42.9%) | 22 | 22 | ||
Neotherapy | 0.615 | 0.305 | ||||
Yes | 24(8.1%) | 3(6.1%) | 1 | 3 | ||
No | 272(91.9%) | 46(93.9%) | 40 | 38 | ||
FEV1 | 2.35 ± 0.53 | 2.53 ± 0.67 | 0.049 | 2.49 ± 0.56 | 2.57 ± 0.68 | 0.604 |
FEV1% | 90.21 ± 17.90 | 78.11 ± 12.75 | 0.000 | 76.27 ± 6.85 | 76.74 ± 13.45 | 0.853 |
CCI score | 0.018 | 0.693 | ||||
≤2 | 280(94.6%) | 45(91.8%) | 37(90.2%) | 38(92.7%) | ||
>2 | 16(5.4%) | 4(8.2%) | 4(9.8%) | 3(7.3%) | ||
Surgical procedure | 0.589 | 0.814 | ||||
Open/VATS-assisted | 128(43.2%) | 19(38.8%) | 13 | 14 | ||
VATS | 168(56.8%) | 30(61.2%) | 28 | 27 | ||
Pre right lung volume | 2.66 ± 0.27 | 2.25 ± 0.75 | 0.271 | 2.58 ± 0.30 | 2.54 ± 0.59 | 0.875 |
Pre overall lung volume | 5.07 ± 0.48 | 4.23 ± 0.14 | 0.227 | 4.99 ± 0.47 | 4.71 ± 0.12 | 0.597 |
Tumor pathology | 0.190 | 0.913 | ||||
Squamous cell carcinoma | 208 | 35 | 30 | 30 | ||
Adenocarcinoma | 60 | 6 | 6 | 5 | ||
Other non-small cell carcinoma | 28 | 8 | 5 | 6 | ||
cTNM stage | 0.001 | 0.949 | ||||
Ib | 116 | 24 | 20 | 20 | ||
II(a-b) | 168 | 17 | 13 | 14 | ||
III(a-b) | 12 | 8 | 8 | 7 | ||