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Baseline Demographics
| Characteristic | n (%) (N = 45) |
|---|---|
| Median age, y (range) | 66 (50–86) |
| Sex | |
| Male | 20 (44) |
| Female | 25 (56) |
| Race | |
| White | 37 (82) |
| Black | 6 (13) |
| Other | 2 (5) |
| Current or former smoker | 44 (98) |
| Brain metastases | 10 (22) |
| Chemotherapy cycles | |
| 4 | 23 (51) |
| 5–6 | 22 (49) |
| Median time to first dose of pembrolizumab, wk (range) | 5 (3–9) |
| Measurable disease | 34 (76) |
