| Age group (in Years) | ||||
| 40 - 64 (%) | 65 - 74 (%) | ³75 (%) | p value | |
| Local recurrence | 49 (8.6) | 13 (10.5) | 6 (8.3) | 0.768 |
| Local recurrence by stage | ||||
| Stage 1 | 12 (25.5) | 2 (15.4) | 1 (16.7) | 0.248 |
| Stage 2 | 26 (51.1) | 10 (76.9) | 2 (33.3) | |
| Stage 3 | 11 (23.4) | 1 (7.7) | 3 (50.0) | |
| Distant recurrence | 89 (14.8) | 24 (18.3) | 12 (13.6) | 0.527 |
| Bone | 17 (19.3) | 1 (4.2) | 1 (8.3) | |
| Lung/pleural | 12 (13.6) | 2 (8.3) | 3 (25.0) | |
| Liver | 5 (5.7) | 0 (0.0) | 0 (0.0) | |
| Brain | 4 (4.6) | 0 (0.0) | 1 (8.3) | |
| Nodes | 13 (14.8) | 2 (8.3) | 4 (33.3) | |
| Multiple sites | 37 (42.1) | 19 (79.2) | 3 (25.0) |
|
| Distant recurrence by stage | ||||
| Stage 1 | 10 (12.1) | 3 (13.0) | 0 (0.0) | 0.358 |
| Stage 2 | 45 (53.0) | 14 (60.9) | 3 (33.3) | |
| Stage 3 | 29 (34.9) | 6 (26.1) | 6 (66.7) | |