Table 1.
Socioemographic and baseline clinical characteristics of live births to mothers who were SARS-CoV-2 positive or negative (March 2020 - May 2021).
| Characteristic | Pregnancy SARS-COV-2 Negative, N = 17,446 | Pregnancy SARS-COV-2 Positive, N = 877 | p-value2 |
|---|---|---|---|
| Maternal age, Mean (SD) | 33.1 (4.8) | 31.3 (5.6) | <0.001 |
| Maternal race, n (%) | <0.001 | ||
| Asian | 1,760 (10) | 46 (5.2) | |
| Black or African American | 1,495 (8.6) | 139 (16) | |
| Other | 1,475 (8.5) | 236 (27) | |
| Unknown | 428 (2.5) | 50 (5.7) | |
| White | 12,288 (70) | 406 (46) | |
| Maternal ethnicity, n (%) | <0.001 | ||
| Hispanic | 2,279 (13) | 335 (38) | |
| Not Hispanic | 14,677 (84) | 508 (58) | |
| Unavailable | 490 (2.8) | 34 (3.9) | |
| Maternal public insurance, n (%) | 3,162 (18) | 427 (49) | <0.001 |
| Trimester of maternal SARS-CoV-2 infection, n (%) * | >0.99 | ||
| 1st | 0 (NA) | 62 (7.4) | |
| 2nd | 0 (NA) | 233 (28) | |
| 3rd | 0 (NA) | 546 (65) | |
| Delivery hospital type, n (%) | <0.001 | ||
| Academic medical center | 10,167 (58) | 622 (71) | |
| Community hospital | 7,279 (42) | 255 (29) | |
| Delivery method, n (%) | 0.46 | ||
| C-Section | 5,719 (33) | 298 (34) | |
| Vaginal | 11,727 (67) | 579 (66) | |
| Multiple births, n (%) | 1,094 (6.3) | 71 (8.1) | 0.031 |
| Delivery admission length of stay (days), Median (IQR) | 3.00 (2.00 – 4.00) | 3.00 (2.00 – 4.00) | 0.62 |
| Pre-term birth, n (%) | 0.001 | ||
| Preterm | 1,736 (10.0) | 117 (13) | |
| Term | 15,710 (90) | 760 (87) | |
| Offspring gender, n (%) | 0.59 | ||
| Female | 8,518 (49) | 420 (48) | |
| Male | 8,928 (51) | 457 (52) |
1
Wilcoxon rank sum test; Pearson’s Chi-squared test; Fisher’s exact test. Other race includes American Indian or Alaska Native, Native Hawaiian or Other Pacific Islander
*
Trimester unknown for n=36