Table 1.
Distribution of maternal characteristics of women with placental abruption based on the presence and absence of maternal thrombophilia
| Maternal characteristics | Thrombophilia present (n=85)
|
Thrombophilia absent (n=50)
|
P-value | ||
|---|---|---|---|---|---|
| n | % | n | % | ||
| Maternal age (years)‡ | 0.793 | ||||
| <25 | 16 | 18.8 | 10 | 20.0 | |
| 25–34 | 42 | 49.4 | 27 | 54.0 | |
| ≥35 | 27 | 31.8 | 13 | 26.0 | |
| Parity | 0.095 | ||||
| Nulliparous | 27 | 31.8 | 24 | 48.0 | |
| Primiparous | 37 | 43.5 | 13 | 26.0 | |
| Parity ≥2 | 21 | 24.7 | 13 | 26.0 | |
| Maternal race/ethnicity | 0.586 | ||||
| Caucasian | 13 | 15.3 | 12 | 24.0 | |
| African-American | 29 | 34.1 | 15 | 30.0 | |
| Hispanic | 31 | 36.5 | 15 | 30.0 | |
| Other race/ethnicity | 12 | 14.1 | 8 | 16.0 | |
| Education below high school | 33 | 38.8 | 23 | 46.0 | 0.471 |
| Single marital status | 25 | 29.4 | 10 | 20.0 | 0.309 |
| Smoking during pregnancy | 11 | 12.9 | 7 | 14.0 | 0.999 |
| Pre-pregnancy BMI† | 25.0 ± 5.7 | 26.4 ± 7.2 | 0.282 | ||
| Chronic hypertension | 6 | 7.1 | 2 | 4.0 | 0.710 |
| Preeclampsia | 13 | 15.3 | 5 | 10.0 | 0.443 |
| Insulin-dependent diabetes | 2 | 2.4 | 1 | 2.0 | 0.999 |
| Placental weight (g)† | 409 ± 134 | 371 ± 159 | 0.161 | ||
| Gestational age (weeks)† | 33.5 ± 4.6 | 32.3 ± 5.4 | 0.209 | ||
†
Data reported as mean (standard deviation)
BMI, body-mass index; SD, standard deviation