Table 4.
Thyroid status in outpatients with obesity
| Overall | Adult obesity classa |
|||
|---|---|---|---|---|
| (n = 354) | I | II | III | |
| (n = 60) | (n = 122) | (n = 172) | ||
| Euthyroid | 280 (79.1) | 43 (71.7) | 100 (82.0) | 137 (79.7) |
| Hypothyroidism | 50 (14.1) | 13 (21.7) | 12 (9.8) | 25 (14.5) |
| Adequately treated or resolved | 31 (8.8) | 8 (13.3) | 6 (4.9) | 17 (9.9) |
| Inadequately treated | 5 (1.4) | 1 (1.7) | 2 (1.6) | 2 (1.2) |
| Overtreated | 10 (2.8) | 4 (6.7) | 3 (2.5) | 3 (1.7) |
| Undiagnosed | 2 (0.6) | 0 (0.0) | 1 (0.8) | 1 (0.6) |
| Othersb | 2 (0.6) | 0 (0.0) | 0 (0.0) | 2 (1.2) |
| Subclinical hypothyroidism | 15 (4.2) | 1 (1.7) | 7 (5.7) | 7 (4.1) |
| Previously diagnosed | 6 (1.7) | 1 (1.7) | 3 (2.5) | 2 (1.2) |
| Undiagnosed | 9 (2.5) | 0 (0.0) | 4 (3.3) | 5 (2.9) |
| Othersc | 9 (2.5) | 3 (5.0) | 3 (2.5) | 3 (1.7) |
Data are shown as numbers (%).
a
According to the WHO classification of adult obesity [24], i.e., class I, BMI between 30.00 and 34.99; class II, BMI between 35.00 and 39.99; and class III, BMI equal to or greater than 40.00.
b
Includes 1 patient with hypothyroidism during block and replace therapy for Graves disease and 1 patient with untreated hypothyroidism in history with recent altered thyroid hormone tests suspected of amiodarone-induced thyrotoxicosis.
c
Includes 9 patients with no known thyroid disorder in the past but laboratory tests showed subclinical hyperthyroidism (n = 2), normal TSH levels with decreased FT4 values (n = 6), and normal TSH levels with increased FT4 levels (n = 1).