Characteristics of the control population alongside the study population expressed as mean (SD) or frequency and percentage and level of significance
| Study Group (n = 26) | Control Group (n = 66) | P Value | |
|---|---|---|---|
| Mothers’ characteristics | |||
| Maternal age at pregnancy (yr) | 32.38 (SD, 5.26) | 33.03 (SD, 4.66) | .57 |
| Thyroid disorders | 3/26 (11.5%) | 4/66 (6%) | .40 |
| Anemia | 1/26 (3.8%) | 5/66 (7.5%) | .67 |
| Blood clotting disorders | 1/26 (3.8%) | 7/66 (10.6%) | .43 |
| Hypertension | 1/26 (3.8%) | 2/66 (3%) | 1 |
| Pregestational diabetes | 1/26 (3.8%) | 0 | .28 |
| Pregnancy characteristics | |||
| Spontaneous conception | 21/26 (80%) | 57/65a (88%) | .51 |
| Fetal sex | Male 15/26 (57%) | Male 32/66 (48%) | .43 |
| Female 11/26 (42%) | Female 34/66 (52%) | ||
| GA at MR imaging examination | 33.3 (SD, 2.79) | 34.1 (SD, 2.58) | .20 |
| Neonate characteristics | |||
| Type of birth | Vaginal 4/25a (16%) | Vaginal 43/64a (67%) | <.001 |
| Cesarean 21/25a (84%) | Cesarean 21/64a (33%) | <.001 | |
| Week of birth | 35.04 (SD, 2.66) | 38.52 (SD, 1.27) | <.001 |
↵a There are some cases in which the data are not documented in our records.