Table 1.
Age of patients with different thyroid diseases after the increase in salt iodization in Slovenia in 1999 from 10 to 25 mg potassium iodide per kilogram of salt
| 1999 |
2009 |
||||
|---|---|---|---|---|---|
| Thyroid disease | number | median age in years (range) | number | median age in years (range) | P* |
| Diffuse goiter |
353 |
38 (14-84) |
56 |
53 (16-88) |
<0.001 |
| Multinodular goiter |
327 |
59 (18-92) |
508 |
60 (15-93) |
0.058 |
| Solitary nodule |
286 |
48 (15-90) |
492 |
50 (15-89) |
0.861 |
| Thyroid autonomy |
327 |
69 (19-91) |
239 |
72 (27-92) |
<0.001 |
| Graves’ disease |
278 |
41 (15-78) |
265 |
44 (16-82) |
0.101 |
| Hashimoto’s thyroiditis (HT), total |
732 |
51 (16-89) |
1664 |
50 (15-97) |
0.211 |
| Non-hypothyroid HT† |
363 |
48 (16-88) |
976 |
48 (15-88) |
0.629 |
| Hypothyroid HT† | 369 | 54 (18-89) | 688 | 54 (15-97) | 0.797 |
*Mann-Whitney U test.
†P < 0.001 when comparing age of non-hypothyroid and hypothyroid HT patients.