Table 1.
Socio-Demographic and Reproductive Characteristics and Infant Outcomes in the Study Population, Lima, Peru
| Characteristics | Placental Abruption | P-value | |||
|---|---|---|---|---|---|
| Cases (N = 233) | Controls (N = 238) | ||||
| N | % | N | % | ||
| Maternal Age at Delivery (years) | 27.2±6.51 | 27.2±6.9 | 0.97 | ||
| <20 | 23 | 9.9 | 31 | 13.0 | 0.64 |
| 20-29 | 129 | 55.4 | 122 | 51.3 | |
| 30-34 | 46 | 19.7 | 45 | 18.9 | |
| ≥35 | 35 | 15.0 | 40 | 16.8 | |
| Parity | 1.10±1.581 | 0.95±1.17 | 0.26 | ||
| 0 | 111 | 47.6 | 108 | 45.4 | 0.44 |
| 1 | 62 | 26.6 | 67 | 28.1 | |
| 2-4 | 49 | 21.0 | 58 | 24.4 | |
| ≥5 | 10 | 4.3 | 4 | 1.7 | |
| missing | 1 | 0.4 | 1 | 0.4 | |
| Education ≤ high school | 186 | 79.8 | 202 | 84.9 | 0.18 |
| Single Marital Status | 43 | 18.5 | 35 | 14.7 | 0.32 |
| Employed during Pregnancy | 86 | 36.9 | 85 | 35.7 | 0.37 |
| Planned Pregnancy | 108 | 46.4 | 117 | 49.2 | 0.80 |
| No Prenatal Care | 39 | 16.7 | 23 | 9.7 | 0.03 |
| No Prenatal Vitamin | 106 | 45.5 | 111 | 46.6 | 0.54 |
| Smoked during Pregnancy | 10 | 4.3 | 5 | 2.1 | 0.15 |
| Alcohol Use during Pregnancy | 0 | 0.0 | 0 | 0.0 | --- |
| Illicit Drug Use during Pregnancy | 1 | 0.4 | 0 | 0.0 | --- |
| Pre-Pregnancy Body Mass Index (kg/m2) | 23.5±3.51 | 23.9±4.2 | 0.19 | ||
| <18.5 | 17 | 7.3 | 10 | 4.2 | 0.01 |
| 18.5-24.9 | 142 | 60.9 | 150 | 63.0 | |
| 25.0-29.9 | 50 | 21.5 | 46 | 19.3 | |
| ≥30.0 | 9 | 3.9 | 25 | 10.5 | |
| Missing | 15 | 6.4 | 7 | 2.9 | |
| Preeclampsia | 70 | 30.0 | 28 | 11.8 | <0.001 |
| Gestational Age at Delivery (weeks) | 35.5±4.31 | 37.9±3.4 | <0.001 | ||
| Infant Birth Weight (grams) | 2423±8951 | 3041±794 | <0.001 | ||
| Whole Blood Mitochondrial DNA Copy Number Median (interquartile range) | 262 (180-366) | 250 (180-337) | 0.37 | ||
1
Mean ± SD (SD: standard deviation).