Table 1:
Sample characteristics
| Extreme Preterm Stillbirth | Early Preterm Stillbirth | Late Preterm Stillbirth | Term Preterm Stillbirth | p-value* | |
|---|---|---|---|---|---|
| (n = 210) | (n = 85) | (n = 62) | (n = 88) | ||
|
| |||||
| Maternal age (years) | 27.0 ± 6.7 | 28.3 ± 7.2 | 27.1 ± 6.2 | 28.2 ± 7.0 | 0.4 |
|
| |||||
| Race (minority) | 94 (44.8) | 35 (41.2) | 20 (32.3) | 25 (28.4) | 0.038 |
|
| |||||
| Ethnicity (Hispanic) | 58 (27.8) | 30 (35.3) | 21 (33.9) | 32 (36.4) | 0.4 |
|
| |||||
| Education (years) | 12.8 ± 2.9 | 12.8 ± 3.2 | 12.6 ± 3.6 | 12.9 ± 2.9 | 0.9 |
|
| |||||
| Any chronic illness | 144 (68.6) | 52 (61.2) | 43 (69.4) | 65 (73.9) | 0.3 |
| Diabetes | 7 (3.6) | 3 (3.8) | 3 (5.1) | 9 (11.1) | 0.1 |
| Hypertension | 23 (12.0) | 14 (17.7) | 10 (16.9) | 15 (18.5) | 0.4 |
| Cardiovascular disease | 121 (57.6) | 47 (55.3) | 35 (56.5) | 53 (60.2) | 0.9 |
| Gastrointestinal disease | 100 (47.6) | 37 (43.5) | 31 (50.0) | 38 (43.2) | 0.8 |
| Mental health condition | 24 (11.4) | 9 (10.6) | 9 (14.5) | 17 (19.3) | 0.3 |
| Obesity | 58 (27.6) | 23 (27.1) | 17 (27.4) | 20 (22.7) | 0.8 |
|
| |||||
| Obstetric history | |||||
| Past IUFD | 38 (18.1) | 9 (10.6) | 10 (16.1) | 14 (15.9) | 0.5 |
| Number of pregnancies | 2.6 ± 1.6 | 2.6 ± 1.6 | 2.4 ± 1.7 | 2.8 ± 1.9 | 0.7 |
| Assisted reproductive technology | 49 (23.3) | 29 (34.1) | 13 (21.0) | 10 (11.4) | 0.005 |
|
| |||||
| Fetal characteristics | |||||
| Sex (female) | 78 (37.1) | 31 (36.5) | 19 (30.6) | 39 (44.3) | 0.4 |
| Weight (g) | 425 ± 363 | 1181 ± 530 | 2246 ± 671 | 3120 ± 680 | <0.001 |
All values listed as number (percent) or mean ± standard deviation.
*
Chi-Square difference test (categorical) or Kruskall-Wallis test (continuous); p<0.05 significant.