Table 1.
Characteristics of placenta samples were assessed on the Illumina Infinium Array
| Characteristic | Cases (n = 41) | Controls (n = 41) | p-value |
|---|---|---|---|
| Pre-pregnancy BMI (kg/m2) | 26.653 (5.733) | 26.410 (5.422) | p = 0.7635 |
| Maternal Age (years) | 33.171 (4.652) | 33.487 (4.853) | p = 0.7635 |
| Gravidity | p = 0.3891 | ||
| 1 | 8 (19.51%) | 4 (9.76%) | |
| 2 | 11 (26.83%) | 16 (39.02%) | |
| 3 | 13 (31.71%) | 10 (24.39%) | |
| > 4 | 8 (19.51%) | 11 (26.83%) | |
| Smoke during Pregnancy | |||
| No | 38 (92.683%) | 38 (92.683%) | p = 1 |
| Yes | 3 (7.317%) | 3 (7.317%) | |
| Infant Sex | |||
| Males | 20 (48.78%) | 21 (48.78%) | p = 1 |
| Females | 21 (51.22%) | 20 (51.22%) | |
| Ethnicity | |||
| Non-Hispanic White | 23 (56.098%) | 23 (56.098%) | p = 0.9437 |
| Hispanic or Latino | 5 (12.195%) | 4 (9.756%) | |
| Asian/Pacific Islander | 7 (17.073%) | 6 (14.634%) | |
| Black/African-American | 6 (14.634%) | 8 (19.512%) | |
| Conception | |||
| Spontaneous planned | 24 (58.537%) | 24 (58.537%) | p = 1 |
| Spontaneous unplanned | 12 (29.268%) | 12 (29.268%) | |
| Ovulation-induction drug | 2 (4.878%) | 2 (4.878%) | |
| IVF | 3 (7.317%) | 3 (7.317%) | |
| Gestational Age (weeks) | 39.077 (0.932) | 39.206 (1.047) | p = 0.5576 |