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Baseline Characteristics of the Mother
| Mother | No. | Mean time (±SD) | % |
|---|---|---|---|
| Maternal age (y) | 215* | 28 ± 5.3 y | |
| Gestational age (wks) | 215 | 29 ± 4.6 wks | |
| White race | 164 | 76 | |
| African American | 17 | 7 | |
| Hispanic (white or black race) | 20 | 9 | |
| Asian | 13 | 6 | |
| More than 1 race | 1 | 0.4 | |
| Antiarrhythmic therapy | 48 | 22 | |
| Steroid therapy | 34 | 15 |
Excludes healthy volunteers.
