Table 3.
TSH, fT3, and fT4 levels according to pubertal status, among boys and girls aged 12 years
| Geometric mean (SD) | N | TSH (mlU/L) | fT3 (pg/mL) | fT4 (ng/dL) |
|---|---|---|---|---|
| Boys | 223 | |||
| Tanner stages 1-2 (genitalia) | 74 | 0.90 (1.64) | 3.21 (1.13) | 1.03 (1.13) |
| Tanner stage 3 (genitalia) | 87 | 0.91 (1.58) | 3.36 (1.10) | 0.97 (1.11) |
| Tanner stages 4-5 (genitalia) | 62 | 0.89 (1.71) | 3.42 (1.09) | 0.94 (1.15) |
| p (ANOVA) | 0.9 | 0.0009 | 0.0004 | |
| Girls | 227 | |||
| Tanner stages 1-2 (breast) | 54 | 0.86 (1.70) | 3.32 (1.12) | 0.96 (1.15) |
| Tanner stage 3 (breast) | 122 | 0.86 (1.66) | 3.25 (1.13) | 0.96 (1.11) |
| Tanner stages 4-5 (breast) | 51 | 0.97 (1.48) | 3.14 (1.14) | 0.96 (1.11) |
| p (ANOVA) | 0.3 | 0.05 | 0.9 |
TSH, thyroid-stimulating hormone; fT3, free tri-iodothyronine; fT4, free thyroxine; SD, standard deviation.