Distribution of factors in the International Prognostic Index (IPI) between patients in the 2 treatment eras
| IPI factor . | CHOP, % . | R-CHOP, % . |
|---|---|---|
| Age older than 60 y | 47 | 49 |
| LDH over the upper limit of normal | 54 | 60 |
| More than stage II | 48 | 60 |
| More than 1 extranodal site | 17 | 17 |
| Performance status more than 1 | 16 | 29 |
| IPI factor . | CHOP, % . | R-CHOP, % . |
|---|---|---|
| Age older than 60 y | 47 | 49 |
| LDH over the upper limit of normal | 54 | 60 |
| More than stage II | 48 | 60 |
| More than 1 extranodal site | 17 | 17 |
| Performance status more than 1 | 16 | 29 |