Table 5.
Questionnaire and prenatal/neonatal specimen availability by time point, live deliveries (n = 2000)
| During pregnancy gestational age, weeks | Any time during pregnancy | At birth | |||
|---|---|---|---|---|---|
| < 18 | 18–25 | > 25 | |||
| Questionnaires, n (%) | 2000 (100%) | 1726 (86%) | 2000 (100%) | 1080 (54%) | |
| Diet History Questionnaire II, n (%) | 1406 (70%) | 1406 (70%) | |||
| Maternal urine, n (%) | 1777 (89%) | 1318 (66%) | 1627 (81%) | 1938 (97%) | |
| Maternal saliva, n (%) | 1603 (80%) | 1074 (54%) | 1458 (73%) | 1868 (93%) | |
| Maternal whole blood, n (%) | 1146 (57%) | 479 (24%) | 850 (43%) | 1514 (76%) | |
| Maternal PAXgene RNA tube, n (%) | 1174 (59%) | 850 (43%) | 1441 (72%) | ||
| Maternal plasma, n (%) | 477 (24%) | 477 (24%) | |||
| Maternal serum, n (%) | 1155 (58%) | 492 (25%) | 858 (43%) | 1521 (76%) | |
| Maternal vaginal swab, n (%) | 1088 (54%) | 860 (43%) | 1173 (59%) | 1491 (75%) | |
| Placental core, n (%) | 1509 (75%) | ||||
| Umbilical cord, n (%) | 1491 (75%) | ||||
| Cord blood (PAXgene RNA tube), n (%) | 1392 (70%) | ||||
| Cord blood (Whole), n (%) | 1059 (53%) | ||||
| Cord serum, n (%) | 886 (44%) | ||||
| Cold plasma, n (%) | 417 (21%) | ||||
| Neonatal meconium, n (%) | 396 (20%) | ||||