Table I.
Host characteristics
| Variables | Numbera | Percent |
|---|---|---|
| Median survival time (months) | 77.80 | |
| Median follow-up time (months) | 58.42 | |
| Age, median (range) | 66 (29–92) | |
| Pack year, median (range) | 45 (0.1–256)b | |
| Total patients | 535 | |
| Sex | ||
| Male | 262 | 49 |
| Female | 273 | 51 |
| Pathological stage | ||
| Stage 0 | 2 | 0 |
| Stage 1A | 192 | 40 |
| Stage 1B | 169 | 35 |
| Stage 2A | 30 | 6 |
| Stage 2B | 89 | 18 |
| Clinical stage | ||
| Stage 1A | 245 | 46 |
| Stage 1B | 188 | 35 |
| Stage 2A | 26 | 5 |
| Stage 2B | 76 | 14 |
| Smoking status | ||
| Never | 68 | 13 |
| Former | 270 | 50 |
| Current and recently quit | 197 | 37 |
| Race | ||
| White | 469 | 88 |
| Black | 42 | 8 |
| Others | 24 | 4 |
| Histology | ||
| Adenocarcinoma | 315 | 59 |
| Squamous | 149 | 28 |
| Not otherwise specified | 27 | 5 |
| Other | 44 | 8 |
| Vital status | ||
| Alive | 322 | 60 |
| Dead | 213 | 40 |
| Recurrencec | ||
| No | 317 | 75 |
| Yes | 103 | 25 |
| Surgical procedure | ||
| Wedge resection | 16 | 4 |
| Lobectomy | 49 | 11 |
| Lobectomy + MLDd | 330 | 76 |
| Bilobectomy | 15 | 3 |
| Pneumonectomy | 26 | 6 |
| Surgery result | ||
| Complete | 470 | 98 |
| Residual | 12 | 2 |
| Treatment | ||
| Surgery-only | 340 | 64 |
| Surgery + chemotherapy | 127 | 24 |
| Surgery + adjuvant radiation | 15 | 3 |
| Treatment without surgery | 53 | 10 |
aNumbers may not add up to total number of patients due to missing clinical information.
bAmong ever smokers.
cPatients with recurrent disease at the time of first treatment were not counted in the analysis.
dMediastinal lymph node dissection.