Table 1 Comparison of baseline characteristics between the groups
From: Is annual surveillance of all treated hypothyroid patients necessary?
Baseline characteristics | 12 monthly FU (n = 943) | 18 monthly FU (n = 1182) |
|---|---|---|
Age years mean (SD) | 50.2 (13.9) | 51.6 (12.8) |
Thyroxine dose at registration (μg/day) mean (SD) | 131.8 (41.4) | 130.7 (43.1) |
Age < 60 years (n = 1556) | 73.4% | 73.1% |
Female (n = 1892) | 90.3% | 88.0% |
Autoimmune hypothyroidism (n = 1384) | 61.6% | 67.9% |
Mean duration of follow-up (years) mean (SD) | 16.5 (4.6) | 15.6 (4.4) |