Univariate analysis of prognostic factors with patient characteristics
| Prognostic factor . | 5-year OS . | 5-year PFS . | ||
|---|---|---|---|---|
| % . | P . | % . | P . | |
| Sex | ||||
| Male | 66 | .867 | 48 | .422 |
| Female | 62 | 63 | ||
| Age, y | ||||
| 60 y or younger | 70 | .005 | 55 | .032 |
| Older than 60 y | 36 | 30 | ||
| ECOG score | ||||
| 0 | 92 | .05 | 69 | .196 |
| 1 | 57 | 47 | ||
| B symptoms | ||||
| No | 74 | .003 | 58 | .009 |
| Yes | 45 | 37 | ||
| LDH | ||||
| Normal | 70 | .112 | 68 | .059 |
| High | 40 | 40 | ||
| Location of primary tumor* | ||||
| Nasopharynx | 70 | .304 | 52 | .649 |
| Tonsil | 57 | 46 | ||
| Stage | ||||
| I | 93 | .004 | 69 | .011 |
| II | 71 | 58 | ||
| III/IV | 36 | 22 | ||
| IPI | ||||
| 0 | 81 | .001 | 63 | .002 |
| 1 | 56 | 49 | ||
| 2-4 | 25 | 15 | ||
| Prognostic factor . | 5-year OS . | 5-year PFS . | ||
|---|---|---|---|---|
| % . | P . | % . | P . | |
| Sex | ||||
| Male | 66 | .867 | 48 | .422 |
| Female | 62 | 63 | ||
| Age, y | ||||
| 60 y or younger | 70 | .005 | 55 | .032 |
| Older than 60 y | 36 | 30 | ||
| ECOG score | ||||
| 0 | 92 | .05 | 69 | .196 |
| 1 | 57 | 47 | ||
| B symptoms | ||||
| No | 74 | .003 | 58 | .009 |
| Yes | 45 | 37 | ||
| LDH | ||||
| Normal | 70 | .112 | 68 | .059 |
| High | 40 | 40 | ||
| Location of primary tumor* | ||||
| Nasopharynx | 70 | .304 | 52 | .649 |
| Tonsil | 57 | 46 | ||
| Stage | ||||
| I | 93 | .004 | 69 | .011 |
| II | 71 | 58 | ||
| III/IV | 36 | 22 | ||
| IPI | ||||
| 0 | 81 | .001 | 63 | .002 |
| 1 | 56 | 49 | ||
| 2-4 | 25 | 15 | ||
OS indicates overall survival; PFS, progression-free survival; ECOG, Eastern Cooperative Oncology Group; LDH, lactate dehydrogenase; and IPI, international prognostic index.
Due to the small number of patients, 4 patients with lymphoma arising in the base of tongue and oropharynx were excluded from this analysis.