| Variable | Score | |
| L | LDH level in pleural fluid (IU/L) | |
| <1500 | 0 | |
| >1500 | 1 | |
| E | ECOG PS | |
| 0 | 0 | |
| 1 | 1 | |
| 2 | 2 | |
| 3 to 4 | 3 | |
| N | NLR | |
| <9 | 0 | |
| >9 | 1 | |
| T | Tumor type | |
Lowest risk tumor types
| 0 | |
Moderate risk tumor types
| 1 | |
Highest risk tumor types
| 2 | |
| Risk categories | Total score (median survival in days) | |
| Low risk | 0 to 1 (319) | |
| Moderate risk | 2 to 4 (130) | |
| High risk | 5 to 7 (44) | |
