Table 4.
Fetal and placental data of reviewed cases of stillbirth and early miscarriage
| Variable | Summary statistics | IQR |
|---|---|---|
| Time between COVID-19 symptoms and stillbirth or miscarriage (d) | 9.5 (6.0–9.5) | 2–77 |
| Time between SARS-CoV-2 infection and stillbirth or miscarriage (d) | 2.5 (0.0–9.3) | 0–70 |
| GA at stillbirth or miscarriage (wk) | 28.37 (22.6–33.6) | 14–41 |
| GA classes at stillbirth or miscarriage | ||
| 14–22 wk | 40 (21.1%) | |
| 22–32 wk | 85 (44.7%) | |
| 32–42 wk | 64 (33.7%) | |
| Unknown | 1 (0.5%) | |
| Fetal characteristics | ||
| Male | 36 (19.0%) | |
| Female | 39 (20.5%) | |
| Unknown sex | 115 (60.5%) | |
| Fetal weight (g) | 1416 (948) | 120–4250 |
| Fetal weight z score | −0.52 (3.17) | −22.10 to 4.77 |
| Fetal SARS-CoV-2 positivity | 23 (12.1%) | |
| Placental characteristics | ||
| Fibrin deposition | 136 (90.7%) | |
| Chronic intervillositis | 128 (85.3%) | |
| Trophoblast necrosis | 96 (64.0%) | |
| Villitis | 19 (12.7%) | |
| Placental SARS-CoV-2 positivity | 132 (88.0%) | |
Data are presented as median (IQR), mean (standard deviation), IQR, or number (percentage). The percentage refers to the total number of fetuses, except that for placental histology where the percentage refers to the total number of placental histologic examinations (N=150). The z score is a dimensionless variable. GA classes were defined using trimester thresholds.
GA, gestational age; IQR, interquartile range.
Alcover. Fetal demises following SARS-CoV-2 infection. Am J Obstet Gynecol 2023.