Table 4.
Univariate Cox proportional hazards model for predicting event-free survival
| Potential prognostic factor | HR (lower limit-upper limit) | P |
|---|---|---|
| Categorical variables | ||
| Sex | ||
| Female vs male | 0.84 (0.3941-1.7839) | .6473 |
| Consolidation RT | ||
| No vs yes | 4.71 (1.3281-16.6805) | .0164 |
| GHSG classification | ||
| IIB-advanced vs early-favorable | 7.56 (1.6917-33.7941) | .0081 |
| Early-unfavorable vs early-favorable | 2.89 (0.8589-9.7276) | .0865 |
| Ann Arbor disease stage | ||
| I vs II | 0.19 (0.0260-1.4101) | .1046 |
| B-symptoms | ||
| No vs yes | 0.53 (0.2418-1.1540) | .1095 |
| Bulky disease | ||
| No vs yes | 0.53 (0.2447-1.1361) | .1022 |
| Extranodal disease | ||
| No vs yes | 1.31 (0.1774-9.6295) | .7927 |
| Chemotherapy regimen | ||
| ABVD vs other | 0.93 (0.2792-3.0789) | .9017 |
| Continuous variables | ||
| Age at diagnosis | 1.01 (0.9823-1.0305) | .6174 |
| ESR | 0.99 (0.9763-1.0242) | .9966 |
| Radiation dose | 1.32 (1.0929-1.5910) | .0039 |
| Total MTVst | 1.00 (1.0006-1.0019) | .0002 |
| Total TLGst | 1.00 (1.0001-1.0004) | .0004 |
| Total MTVt | 1.00 (1.0007-1.0025) | .0004 |
| Total MTVt 100-unit increase | 1.17 (1.0735-1.2793) | .0004 |
| Total TLGt | 1.00 (1.0001-1.0004) | .0011 |
| Total TLGt 500-unit increase | 1.13 (1.0514-1.2228) | .0011 |
| Longest axial diameter of disease | 1.17 (1.0139-1.3604) | .0320 |
| Longest sagittal diameter of disease | 1.11 (1.0013-1.2341) | .0471 |
| Longest coronal diameter of disease | 1.17 (1.0618-1.2872) | .0015 |
| Maximum SUV | 1.02 (0.9633-1.0781) | .5100 |