Table 2. Characteristics of singleton stillbirths and live births ≥ 24 weeks GA with adequate placental examination.
| Characteristic, column % or as shown 1/ | Stillbirth | Live birth | P-value 2/ |
|---|---|---|---|
| Unweighted number | 319 | 1119 | |
| Weighted number | 314 | 948 | |
| MOTHER | |||
| Age at delivery, years | |||
| Median | 26 | 27 | 0.59 |
| Interquartile range | 22 to 32 | 22 to 31 | |
| Race/ethnicity | 0.02 | ||
| Non-Hispanic white | 36 | 45 | |
| Non-Hispanic black | 17 | 11 | |
| Hispanic | 41 | 36 | |
| Other | 6 | 7 | |
| Chronic hypertension | 11 | 5 | 0.007 |
| Gestational hypertension/pre-eclampsia | 20 | 11 | <0.001 |
| Pre-gestational diabetes | 7 | 2 | <0.001 |
| Gestational diabetes | 7 | 8 | 0.63 |
| INFANT | |||
| GA, weeks | <0.001 | ||
| Median | 33 | 39 | |
| Interquartile range | 28 to 37 | 38 to 40 | |
| GA category | <0.001 | ||
| 24–31 wk | 41 | 1 | |
| 32–26 wk | 31 | 8 | |
| 37+ wk | 28 | 90 | |
| Birth weight, grams | <0.001 | ||
| Median | 1,949 | 3,321 | |
| Interquartile range | 984 to 2,873 | 3,005 to 3,638 | |
| Male sex | 55 | 50 | 0.13 |
| Congenital anomaly | 13 | 3 | <0.001 |
1/ Weighted percentages and other statistics are shown. Information was missing as follows (unweighted n): pre-pregnancy hypertension, 4; pre-pregnancy diabetes, 4; male sex, 2.
2/ P-value for a difference between stillbirths and live births by the Wald chi-square test (categorical variables) or the median test (continuous variables).