Table V.
Clinical characteristics of patients following propensity-score matching.
| Surgical groups | Non-surgical groups | |||||
|---|---|---|---|---|---|---|
| Variable | Lobectomy (n=4,724) | Sublobar resection (n=4,724) | P-value | Radiation (n=1,450) | Observation (n=1,450) | P-value |
| Age, years | 1.000 | 0.832 | ||||
| <70 | 2,054 | 2,054 | 370 | 375 | ||
| ≥70 | 2,670 | 2,670 | 1,080 | 1,075 | ||
| Sex | 1.000 | 0.970 | ||||
| Male | 2,649 | 2,649 | 786 | 785 | ||
| Female | 2,075 | 2,075 | 664 | 665 | ||
| T classification | 1.000 | 0.998 | ||||
| T1a | 621 | 621 | 31 | 33 | ||
| Tb | 2,039 | 2,039 | 408 | 404 | ||
| Tc | 884 | 884 | 546 | 548 | ||
| T2 Cent, Visc Pl | 780 | 780 | 86 | 84 | ||
| T2a | 400 | 400 | 379 | 381 | ||
| Histology | 1.000 | 0.866 | ||||
| AD | 2,997 | 2,997 | 747 | 734 | ||
| NSCC | 1,393 | 1,393 | 532 | 538 | ||
| SC | 334 | 334 | 171 | 178 | ||
| Grade | 1.000 | 0.601 | ||||
| I–II | 3,177 | 3,177 | 808 | 794 | ||
| III–IV | 1,547 | 1,547 | 642 | 656 | ||
| Sites in lung | 1.000 | 0.977 | ||||
| Upper lobe | 3,066 | 3,066 | 910 | 907 | ||
| Middle lobe | 194 | 194 | 48 | 48 | ||
| Lower lobe | 1,462 | 1,462 | 483 | 484 | ||
| Main bronchus | 2 | 2 | 9 | 11 | ||
Cent, tumor involving main bronchus but not carina, atelectasis or hilum; Visc Pl, tumor involving visceral pleura; NSCC, histologic types of non-small cell lung cancer other than adenocarcinoma or squamous cell carcinoma; AD, adenocarcinoma; SC, squamous cell carcinoma.