TABLE 1.
Clinical and demographic patient factors
| Non‐smoker | Ever smoker | P value | |
|---|---|---|---|
| n = 76 | n = 168 | ||
| Age (mean [SD]) | 55.51 (10.16) | 57.11 (9.29) | .229 |
| Male (%) | 65 (85.5) | 143 (85.1) | 1 |
| Race (%) | .47 | ||
| Black | 8 (10.5) | 14 (8.3) | |
| White | 67 (88.2) | 147 (87.5) | |
| Other | 1 (1.3) | 2 (1.2) | |
| Unknown | 0 (0.0) | 5 (3.0) | |
| T‐stage (%) | .78 | ||
| Tis | 0 (0.0) | 1 (0.6) | |
| T1‐2 | 51 (67.1) | 114 (67.9) | |
| T3‐4b | 25 (32.9) | 53 (31.5) | |
| N‐stage (%) | .16 | ||
| 0 | 9 (11.8) | 20 (11.9) | |
| 1 | 13 (17.1) | 13 (7.7) | |
| 2a‐c | 48 (63.2) | 116 (69.0) | |
| 3 | 6 (7.9) | 19 (11.3) | |
| M0 (%) | 76 (100.0) | 164 (97.6) | .42 |
| Treatment strategy (%) | .63 | ||
| Chemo‐radiation | 52 (68.4) | 102 (60.7) | |
| Radiation therapy | 3 (3.9) | 12 (7.1) | |
| Surgery alone | 2 (2.6) | 12 (7.1) | |
| Surgery with adjuvant treatment | 10 (13.2) | 25 (14.9) | |
| Induction chemo., chemo‐radiation | 5 (6.6) | 9 (5.4) | |
| Induction chemo., surgery | 4 (5.3) | 8 (4.8) | |
| Documented recurrence (%) | 0.12 (0.33) | 0.19 (0.39) | .17 |
| Pack‐years smoking (mean [SD]) | 0 (0.0) | 27.27 (22.24) | |
| Clinical trial participation (%) | .03 | ||
| Yes | 33 (43.4) | 45 (26.8) | |
| No | 13 (17.1) | 45 (26.8) | |
| Unknown | 30 (39.5) | 78 (46.4) |
Note: Patients were stratified by history of smoking exposure. Staging variables are reported according to AJCC7.