2.
The details of recurrence and metastasis between the two groups
| CIK group (n = 16) | Control group (n = 29) | P | |
| Sites | 0.581 | ||
| Chest wall | 3/16 (18.8%) | 6/29 (20.7%) | |
| Regional lymph node | 4/16 (25.0%) | 5/29 (17.2%) | |
| Lung | 6/16 (37.5%) | 12/29 (41.4%) | |
| Bone | 6/16 (37.5%) | 9/29 (31.0%) | |
| Liver | 3/16 (18.8%) | 5/29 (17.2%) | |
| Brain | 3/16 (18.8%) | 4/29 (13.8%) | |
| Other sites | 1/16 (6.3%) | 2/29 (6.9%) | |
| Numbers of metastatic sites | 0.628 | ||
| 1 | 7/16 (43.7%) | 14/29 (48.3%) | |
| 2 | 1/16 (6.3%) | 4/29 (13.8%) | |
| ≥ 3 | 8/16 (50.0%) | 11/29 (37.9%) |