Table 1.
Baseline Patient and Nodule Characteristics
| Patient Characteristics | |
|---|---|
| No. of patients | 9851 |
| Sex | |
| Female | 8263 (83.9) |
| Male | 1588 (16.1) |
| Age, y | |
| Mean ± SD | 52.2 ± 15.0 |
| Range | 18–95 |
| Multinodular gland | |
| Yes | 4495 (45.6) |
| No | 5356 (54.4) |
| Thyroidectomy | 3186 (32.3) |
| Hashimoto thyroiditisa | |
| Yes | 2651 (26.9) |
| No | 7200 (73.1) |
| Nodule characteristics | |
| No. of nodules | 21,397 |
| Largest dimension, cm | |
| Mean ± SD | 2.6 ± 1.3 |
| Range | 1.0–12.8 |
| Nodules biopsied | 14,063 (65.7) |
Data reported as no. (%) unless otherwise indicated.
a
HT criteria: chronic lymphocytic thyroiditis on histopathology and/or elevated thyroperoxidase antibodies and/or diffuse heterogeneity on ultrasound.