Table 1.
Maternal Demographics of Subjects With TSH Measured and Without TSH Measured During Pregnancy
| Demographic variable | TSH measured during pregnancy | TSH not measured during pregnancy | Comparison (P-value) |
|---|---|---|---|
| Age (years): mean (SD) | 29.1 (6.1) | 28.2 (6.1) | <.0001 |
| Race (%) | <.0001 | ||
| White | 15 | 13 | |
| Black | 60 | 36 | |
| Hispanic | 14 | 40 | |
| Other | 11 | 11 | |
| Ethnicity (%) | <.0001 | ||
| Hispanic | 13 | 38 | |
| Non-Hispanic | 87 | 62 | |
| Highest education level (%) | <.0001 | ||
| 8th grade or less | 11 | 17 | |
| High school | 56 | 52 | |
| College and above | 33 | 31 | |
| Insurance category (%) | <.0001 | ||
| Public | 79 | 88 | |
| Commercial/private | 21 | 12 | |
| Smoking during pregnancy (%) | <.0001 | ||
| Yes | 7 | 2 | |
| No | 93 | 98 | |
| Alcohol consumption during pregnancy (%) | <.0001 | ||
| Yes | 2 | 0.2 | |
| No | 98 | 99.8 | |
| BMI at initial prenatal visit (%) | <.0001 | ||
| Underweight | 2 | 1 | |
| Normal | 38 | 31 | |
| Overweight | 30 | 31 | |
| Obese | 17 | 21 | |
| Morbidly obese | 13 | 16 | |
| BMI at last prenatal visit (%) | .03 | ||
| Underweight | 0.1 | 0.2 | |
| Normal | 11 | 13 | |
| Overweight | 33 | 33 | |
| Obese | 30 | 29 | |
| Morbidly obese | 26 | 24 | |
| Family history of thyroid disease (%) | |||
| Yes | 0.1 | 0.01 | .006 |
| No | 99.9 | 99.9 | |
| History of type 2 diabetes (%) | <.0001 | ||
| Yes | 0.8 | 0.3 | |
| No | 99.2 | 99.7 | |
| History of hypertension (%) | <.0001 | ||
| Yes | 2 | 0.6 | |
| No | 98 | 99.4 | |
| History of fetal loss (%) | <.0001 | ||
| Yes | 2 | 0.7 | |
| No | 98 | 99.3 | |
| History of preterm delivery (%) | <.0001 | ||
| Yes | 0.6 | 0.2 | |
| No | 99.4 | 99.8 |
Abbreviations: TSH, thyroid stimulating hormone; BMI, body mass index