Research Article
Maternal Thyroid Function during the Second Half of Pregnancy and Child Neurodevelopment at 6, 12, 24, and 60 Months of Age
Table 1
Demographic characteristics of study participants (
).
| | No. (%) |
| | Mothers | | | Age (years) | | | 18–24 | 130 (45.3) | | 25–29 | 95 (33.1) | | 30–34 | 42 (14.6) | | 35–45 | 20 (7.0) |
| | Race/Ethnicity | | | White | 5 (1.7) | | Latino | 278 (96.9) | | Other | 4 (1.4) |
| | Education | | | ≤6th grade | 121 (42.2) | | 7–12th grade | 105 (36.6) | | ≥High School | 61 (21.3) |
| | Income (% poverty) | | | <100 | 171 (59.6) | | 100–200 | 105 (36.6) | | >200 | 11 (3.8) |
| | Country of birth | | | United States | 32 (11.1) | | Mexico | 251 (87.5) | | Other | 4 (1.4) |
| | Time in the USA (years) | | | ≤5 | 156 (54.4) | | 6–10 | 69 (24.0) | | ≥11 | 62 (21.6) |
| | Parity | | | 0 | 91 (31.7) | | ≥1 | 196 (68.3) |
| | Smoking during pregnancy | | | No | 271 (94.4) | | Yes | 16 (5.6) |
| | Alcohol during pregnancy (≥one serving) | | | No | 282 (98.3) | | Yes | 5 (1.7) |
| | Children | | | Sex | | | Boy | 140 (48.8) | | Girl | 147 (51.2) |
| | Birthweight (g) | | | <2500 g | 10 (3.5) | | 2500–3500 g | 149 (51.9) | | >3500 g | 128 (44.6) |
| | Gestational duration (weeks) | | | <37 | 21 (7.3) | | 37–42 | 266 (92.7) | | >42 | 0 (0.0) |
|
|
