| Clinical features | Children and teenager | Adult | x2 | P |
| Gender |
|
| C | 0.855 |
| Male | 1 | 25 |
|
|
| Female | 6 | 75 |
|
|
| Symptom and Sign |
|
| C | 0.768 |
| Yes | 6 | 73 |
|
|
| No | 1 | 27 |
|
|
| Pulmonary Metastasectomy |
|
| F | 0.065 |
| Yes | 1 | 0 |
|
|
| No | 6 | 100 |
|
|
| I131 Thyroglobulin before Treatment |
|
| F | 0.386 |
| Above-Normal | 1 | 6 |
|
|
| Normality/Subnormality | 6 | 94 |
|
|