Table 1.
Maternal and pregnancy characteristics from 388 women enrolled in MotherToBaby Pregnancy Studies, 2009–2014.
| Characteristics | Rheumatoid Arthritis N=216 |
Asthma N=172 |
|---|---|---|
| Gestational Week at Enrollment, median (IQ Range) | 10.7 (7.1) | 13.0 (6.9) |
| Maternal Age, mean (SD) | 32.6 (4.3) | 32.5 (5.0) |
| Completed only 2 Interviews | 14 (6.5) | 4 (2.3) |
| Completed only 3 interviews | 33 (15.3) | 28 (16.3) |
| Race/Ethnicity, n (%) | ||
| Non-Hispanic White | 171 (79.2) | 144 (83.7) |
| Other | 25 (11.6) | 18 (10.5) |
| Missing | 20 (9.3) | 10 (5.8) |
| Socioeconomic Statusa, n (%) | ||
| 1 or 2 | 165 (76.4) | 143 (83.1) |
| 3, 4, or 5 | 47 (21.8) | 29 (16.9) |
| Missing | 4 (1.9) | 0 |
| Primiparous, n (%) | 101 (46.8) | 104 (60.5) |
| Multifetal Gestation, n (%) | 14 (6.5) | 8 (4.7) |
| Pre-pregnancy Body Mass Index mg/kg2, n (%) | ||
| <25 | 135 (62.5) | 84 (48.8) |
| 25–29.9 | 46 (21.3) | 51 (29.7) |
| ≥30 | 35 (16.2) | 37 (21.5) |
| Health Assessment Disability Index Score at Enrollment, mean (SD) | 0.5 (0.6) | NA |
| Pregnancy Asthma Control Test Score at Enrollment, mean (SD)b | NA | 20.6 (4.0) |
| Gestational Age at Delivery (weeks), mean (SD) | 38.4 (2.3) | 39.0 (2.6) |
Abbreviations: IQ, interquartile; NA, not applicable; SD, standard deviation.
a
Calculated using Hollingshead categories based on maternal and paternal education and occupation; Possible Range: 1, highest to 5, lowest
b
Missing for 6 women.