Table 2.
Contingency table showing test results of rebiopsy and plasma ddPCR for EGFR T790M mutation (N = 53)
| Rebiopsy T790M | ||
|---|---|---|
| ddPCR T790M | Positive | Negative |
| Positive | 19 (36) | 4 (8) |
| Negative | 9 (17) | 21 (40) |
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