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Patient characteristics
| Characteristics | Level 1 (N = 3) | Level 2 (N = 6) | Level 3 (N = 6) | N (%) |
|---|---|---|---|---|
| Age, y | ||||
| Median (range) | 59 (65–56) | 61 (48–63) | 63 (52–68) | 62 (48–68) |
| Gender, n | ||||
| Male | 1 | 4 | 3 | 8 (53 %) |
| Female | 2 | 2 | 3 | 7 (47 %) |
| ECOG performance status, n | ||||
| 0 | 2 | 2 | 2 | 6 (40 %) |
| 1 | 1 | 4 | 4 | 9 (60 %) |
| Clinical stage | ||||
| IIIA | 1 | 2 | 2 | 5 (33 %) |
| IIIB | 2 | 4 | 4 | 10 (67 %) |
| Smoking History, n | ||||
| Never | 2 | 2 | 3 | 7 (47 %) |
| Ever | 1 | 4 | 3 | 8 (53 %) |
| Former | 1 | 2 | 1 | 4 (27 %) |
| Current | 0 | 2 | 2 | 4 (53 %) |
