Table 1.
Socio-Demographic and Reproductive Characteristics and Infant Outcomes in the Study Population, Lima, Peru, 2006-2008
| Characteristics | Placental Abruption | p-value | |||
|---|---|---|---|---|---|
| Cases (N=373) | Controls (N=368) | ||||
| n | % | n | % | ||
| Maternal Age at delivery (years) | 28.4 ± 6.7* | 28.0 ± 6.3 | 0.37 | ||
| Maternal Age at delivery (years) | |||||
| <20 | 38 | 10.2 | 30 | 8.2 | 0.61 |
| 20-29 | 174 | 46.6 | 191 | 51.9 | |
| 30-34 | 85 | 22.8 | 78 | 21.2 | |
| ≥35 | 75 | 20.1 | 67 | 18.2 | |
| Missing | 1 | 0.3 | 2 | 0.5 | |
| Primiparity | 160 | 42.9 | 144 | 39.1 | 0.22 |
| High School Education or lower | 240 | 64.3 | 216 | 58.7 | 0.27 |
| Employed during Pregnancy | 185 | 49.6 | 176 | 47.8 | 0.63 |
| Planned Pregnancy | 131 | 35.1 | 115 | 31.3 | 0.56 |
| No Prenatal Care | 41 | 11.0 | 22 | 6.0 | 0.01 |
| No Prenatal Vitamin | 56 | 15.0 | 45 | 12.2 | 0.40 |
| Smoking during Pregnancy | 8 | 2.1 | 6 | 1.6 | 0.48 |
| Alcohol use during Pregnancy | 35 | 9.4 | 30 | 8.2 | 0.70 |
| Illicit Drug use during Pregnancy | 2 | 0.5 | 1 | 0.3 | --- |
| Pre-pregnancy Body Mass Index (kg/m2) | 23.7 ± 3.7* | 23.4 ± 3.5 | 0.31 | ||
| Pre-pregnancy Body Mass Index (kg/m2) | |||||
| < 19.8 | 39 | 10.5 | 38 | 10.3 | 0.46 |
| 19.8-26.0 | 227 | 60.9 | 245 | 66.6 | |
| 26.1-29.0 | 47 | 12.6 | 36 | 9.8 | |
| ≥ 29.0 | 27 | 7.2 | 25 | 6.8 | |
| Missing | 33 | 8.8 | 24 | 6.5 | |
| Chronic Hypertension | 20 | 5.4 | 10 | 2.7 | 0.20 |
| Infant Birth Weight (grams)** | 2471 ± 846* | 3306 ± 502 | <0.001 | ||
| Low Birth Weight Infant (<2500grams)** | 158 | 42.4 | 17 | 4.6 | <0.001 |
| Gestational age at delivery (weeks)** | 35.3 ± 3.8* | 38.7 ± 1.8 | <0.001 | ||
| Preterm Delivery Infant (<37weeks)** | 203 | 54.4 | 20 | 5.4 | <0.001 |
| Stillbirth | 59 | 15.8 | 0 | 0 | --- |
*
Mean ± SD (SD: standard deviation)
**
Restricted to live birth only (314 cases and 368 controls)