From: Sublobar resection versus lobectomy in the treatment of synchronous multiple primary lung cancer
Factors | Pre-matching | After matching | ||||||
---|---|---|---|---|---|---|---|---|
sMPLC (n=76) | SLC (n=415) | X2/t | P | sMPLC (n=75) | SLC (n=75) | x2/t | P | |
Age, y ± SD | 57.0±10.7 | 57.3±12.0 | -0.22 | 0.892 | 62.0±7.4 | 60.8±9.9 | 0.79 | 0.432 |
Sex, n (%) | ||||||||
 Male | 22 (28.9%) | 137 (33.0%) | 0.49 | 0.486 | 28 (43.1%) | 23 (35.4%) | 0.81 | 0.369 |
 Female | 54 (71.1%) | 278 (67.0%) | 2.26 | 0.150 | 37 (56.9%) | 42 (64.6%) | 3.33 | 0.504 |
Main tumor staging | ||||||||
 IA | 72 (96.6%) | 401 (97.3%) | 0.262 | 0.793 | 51 (78.5%) | 57 (87.7%) | 0.67 | 0.507 |
 IB | 0 (0%) | 2 (0%) |  |  | 3 (4.6%) | 1 (1.5%) |  |  |
 IIA | 1 (1.3%) | 4 (0%) |  |  | 3 (4.6%) | 3 (4.6%) |  |  |
 IIB | 0 (0%) | 1 (0%) |  |  | 2 (3.1%) | 2 (3.1%) |  |  |
 IIIA | 3 (4.0%) | 7 (2.7%) |  |  | 6 (9.2%) | 2 (3.1%) |  |  |
 Tumor size (mm) | 12.1±7.6 | 11.8±9.3 |  |  | 22.0±12.5 | 20.4±15.3 |  |  |