Table I.
Mean values of thyroid hormone in non-pregnant women.
| Groups (age range) | n | FT3 (ng/l) | FT4 (ng/dl) | TSH (µIU/ml) |
|---|---|---|---|---|
| 20–40 | 513 | 3.14±0.43 | 0.85±0.13b | 2.20±1.09b |
| 41–55 | 592 | 3.11±0.41b | 0.83±0.12a | 2.29±1.21b |
| 56–85 | 193 | 3.20±0.38a | 0.86±0.12b | 2.53±1.46a |
| Total | 1,298 | 3.14±0.41 | 0.84±0.13 | 2.29±1.46 |
a
P<0.05 vs. values denoted with.
b
The levels of FT3 in the 56–85 was higher than those in the 41–55 group. The levels of FT4 levels in the 41–55 were lower than those in the 20–40 and 56–85 groups, respectively. The levels of TSH in the 56–85 were higher than those at 20–40 and 41–55 groups, respectively. Data are presented as mean ± standard deviation. FT3, free triiodothyronine; FT4, free thyroxine; TSH, thyroid stimulating hormone.