| age |
| age |
| sex |
| gender |
| trtgiven |
| treatment: RT=radition, CMT=Chemotherapy and radiation |
| medwidsi |
| mediastinum involvement: N=no, S=small, L=Large |
| extranod |
| extranodal disease: Y=extranodal disease, N=nodal disease |
| clinstg |
| clinical stage: 1=stage I, 2=stage II |
| time |
| first failure time |