Characteristics of Groups A and B
| Characteristic | Group A (rhTSH; n = 30) | Group B (hypothyroidism; n = 64) |
|---|---|---|
| Age (y) | 45 ± 9.5 | 44 ± 11 |
| Sex | Female: 20; male: 10 | Female: 44; male: 20 |
| Histologic type | Papillary: 27; follicular: 3 | Papillary: 58; follicular: 6 |
| Tumor size (cm) | 2.7 ± 0.7 | 2.5 ± 0.6 |
| Minimal extrathyroidal invasion | 6 (20%) | 14 (22%) |
| Tumor size ≤ 2 cm | 10 (33.3%) | 23 (36%) |
| Tumor size > 2 and ≤ 4 cm | 11 (36.6%) | 21 (33%) |
| Tumor size > 4 cm or extrathyroid invasion | 9 (30%) | 20 (31.2%) |
| Interval between thyroidectomy and ablation (d) | 102 ± 21 | 106 ± 18 |
| TSH immediately before 131I administration (mIU/L)* | 118 ± 28.5 | 85 ± 23 |
↵* P < 0.05.