Table 1.
Patient demographic characteristics (N = 2660)
| Characteristic | Value |
|---|---|
| Age at surgery, y, median (IQR) | 68 (62-74) |
| Sex, n (%) | |
| Female | 1728 (65) |
| Male | 932 (35) |
| Race, n (%) | |
| White | 2257 (85) |
| Asian | 192 (7) |
| Black | 109 (4) |
| Other | 102 (4) |
| Smoking history, n (%) | |
| Ever | 2075 (78) |
| Never | 585 (22) |
| Smoking pack-years, median (IQR) (N = 2656) | 23 (2-42) |
| Initial clinical stage, n (%) | |
| I | 2102 (79) |
| II | 329 (12) |
| IIIA | 229 (9) |
| SUVmax of the primary tumor, median (IQR) | 3.5 (1.8-7.7) |
| Neoadjuvant therapy, n (%) | 260 (10) |
| Procedure, n (%) | |
| Lobectomy | 1617 (61) |
| Pneumonectomy or bilobectomy | 59 (2) |
| Segmentectomy | 356 (13) |
| Wedge | 628 (24) |
| Lymphovascular invasion, n (%) (N = 2612) | 959 (37) |
| Visceral pleural invasion, n (%) (N = 2338) | 441 (19) |
| Pathologic stage, n (%) | |
| 0 | 26 (1) |
| I | 1994 (75) |
| II | 331 (12) |
| III | 309 (12) |
| Adjuvant therapy, n (%) | 503 (19) |
IQR, Interquartile range; SUVmax, maximum standardized uptake value.