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Table 2 Comparisons of clinical characteristics between patients with and without ctDNA present (N = 32)
| ctDNA+ | ctDNA- | P value | |
|---|---|---|---|
| (n = 23) | (n = 9) | ||
| Gender | |||
| Male | 85.0 (17) | 15.0 (3)* | 0.05* |
| Female | 50.0 (6) | 50.0 (6) | |
| Age | |||
| Median years (range) | 58 (25–78) | 62 (34–83) | 0.24 |
| Stage | |||
| M1a or b | 16.7 (1) | 83.3 (5) | 0.03* |
| M1c | 84.6 (22) | 15.4 (4) | |
| Performance status, ECOG | |||
| 0 | 69.6 (16) | 30.4 (5) | 0.68 |
| > 0.99 | 63.6 (7) | 36.4 (4) | |
| LDH | |||
| Not elevated | 63.6 (7) | 36.4 (4) | 0.60 |
| Elevated | 85.7 (6) | 14.3 (1) | |
| Not available | 71.4 (10) | 28.6 (4) | |
