3. Survival by subgroup.
| Subgroup | % Survival | ||
| 6 months | 12 months | 24 months | |
| Undifferentiated | 68.09% | 30.92% | 8.08% |
| LD‐SCLC | 88.70% | 57.98% | 21.09% |
| ED‐SCLC | 65.36% | 29.37% | 6.93% |
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