Table 1.
Maternal and pregnancy characteristics.
| Characteristics | All Women (N=159) |
|---|---|
| Gestational Week at Enrollment, mean (standard deviation) | 12.4 (4.3) |
| Age, mean (standard deviation) | 31.5 (5.4) |
| Race/Ethnicity, n (%) | |
| Non-Hispanic White | 133 (83.7) |
| Hispanic | 14 (8.8) |
| Asian | 7 (4.4) |
| Non-Hispanic Black | 5 (3.1) |
| Socioeconomic Status*, n (%) | |
| 1 | 58 (36.5) |
| 2 | 60 (37.7) |
| 3 | 25 (15.7) |
| 4 | 6 (3.8) |
| 5 | 9 (5.7) |
| Missing | 1 (0.6) |
| Nulliparous, n (%) | 92 (57.9) |
| Multifetal gestation, n (%) | |
| Singleton | 154 (96.9) |
| Twin | 5 (3.1) |
| Body Mass Index, n (%) | |
| <25 | 84 (52.8) |
| 25–29.9 | 47 (29.6) |
| ≥30 | 28 (17.6) |
| Any Smoking During Pregnancy, n (%) | 11 (6.9) |
| Asthma Medication Use During Pregnancy† n (%) | |
| None Observed | 24 (15.1) |
| Short-Acting Beta-Agonists | 120 (75.5) |
| Inhaled Corticosteroids | 88 (55.4) |
| Long-Acting Beta-Agonists | 56 (35.2) |
| Leukotriene Receptor Antagonists | 26 (16.4) |
| Oral Corticosteroids | 24 (15.1) |
| Short or Long Acting Anticholinergics | 4 (2.5) |
| Inhaled Asthma Medication Not Otherwise Specified | 3 (1.9) |
| Intake Pregnancy Asthma Control Test Score, mean (standard deviation) | 20.4 (4.3) |
| Pregnancy outcome | |
| Live birth | 139 (87.4) |
| Stillbirth or spontaneous abortion | 7 (4.4) |
| Lost to follow up | 13 (8.2) |
| Gestational age at outcome | |
| Mean (standard deviation) | 38.2 (5.4) |
| Missing, n (%) | 14 (8.8) |
*
Calculated using Hollingshead categories based on maternal and paternal education and occupation; 1, highest; 5, lowest.
†
Women may be classified in multiple exposure groups due to the use of combination products and the use of multiple medications during pregnancy.