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EGFR-mutated lung cancer patients were more likely to have ever received erlotinib and less likely to have ever received a platinum-based chemotherapy.
| Lung cancer genotype | +erlotinib exposure | No erlotinib exposure | +platinum exposure | No platinum exposure |
|---|---|---|---|---|
| EGFR-mutated (N = 77) | 70 | 7 | 27 | 50 |
| EGFR wild type (N = 511) | 153 | 358 | 249 | 262 |
