Table 1.
Study population characteristics as mean ± SD or N (%).
| Mean ± SD | N = (%) | |
|---|---|---|
| Maternal characteristics | ||
| Age at conception (years) | 30.3 ± 4.31 | 324 |
| Pre-pregnancy BMI (kg/m²) | 23.7 ± 4.69 | 280 |
| Sociodemographic index scorea | 285 | |
| Low social status | 17 (5.96%) | |
| Middle social status | 165 (57.9%) | |
| High social status | 103 (36.1%) | |
| TSH (mU/l)b | 1.83 ± 1.41 | 268 |
| FT3 (pmol/l)b | 4.24 ± 0.51 | 259 |
| FT4 (pmol/l)b | 12.66 ± 2.07 | 261 |
| Child characteristics | ||
| Sex child | 256 | |
| Male | 135 (52.7%) | |
| Female | 122 (47.7%) | |
| Bodyweight at birth (g) | 3538 ± 478.78 | 256 |
| Gain of bodyweight in the first year (%)c | 170 ± 38.74 | 203 |
| Body length at birth (cm) | 50.5 ± 2.41 | 255 |
| TSH (mU/l)d at 1 year | 3.15 ± 1.77 | 93 |
| FT3 (pmol/l)d at 1 year | 7.00 ± 0.82 | 89 |