Table 2.
Correlation between overall concordance of cfDNA samples to matched tumor tissue DNA and clinical characteristics
| Plasma (%) | Sputum (%) | Urine (%) | Total (%) | |
|---|---|---|---|---|
| Sex | ||||
| Male | 95 (19/20) | 89 (17/19) | 79 (15/19) | 95 (19/20) |
| Female | 80 (24/30) | 64 (18/28) | 64 (16/25) | 87 (26/30) |
| P | 0.279 | 0.109 | 0.282 | 0.336 |
| Smoking | ||||
| Yes | 95 (18/19) | 89 (17/18) | 78 (14/18) | 95 (18/19) |
| No | 81 (25/31) | 66 (18/29) | 65 (17/26) | 87 (27/31) |
| P | 0.330 | 0.033 | 0.376 | 0.362 |
| Metastatic site | ||||
| Intrathoracic | 57 (4/7) | 57 (4/7) | 57 (4/7) | 71 (5/7) |
| Extrathoracic | 92 (33/36) | 82 (28/34) | 76 (25/33) | 92 (33/36) |
| P | 0.045 | 0.165 | 0.369 | 0.045 |
| No. of metastatic sites | ||||
| 1 | 80 (8/10) | 63 (5/8) | 50 (4/8) | 80 (8/10) |
| >1 | 96 (25/26) | 88 (23/26) | 84 (21/25) | 96 (25/26) |
| P | 0.181 | 0.126 | 0.074 | 0.181 |