Table 1.
Characteristics of 14,964 singleton births by COVID-19 pandemic cohort and maternal SARS-CoV-2 status
| Pre-pandemic cohort 1/1/19-2/28/20 n=11,842 |
Pandemic cohort 4/1/20-7/31/20 n=3122a |
Pandemic cohort with PCR test 4/1/20-7/31/20 n=3051 |
||
|---|---|---|---|---|
| SARS-CoV-2 positive n=156b |
SARS-CoV-2 negative n=2881b |
|||
| Maternal age | ||||
| <25 | 1277 (10.8) | 364 (11.7) | 27 (17.3) | 319 (11.1) |
| 25-34 | 6280 (53.0) | 1619 (51.9) | 78 (50.0) | 1507 (52.3) |
| 35+ | 4284 (36.2) | 1139 (36.5) | 51 (32.7) | 1055 (36.6) |
| Race/ethnicity | ||||
| Non-Latina Black | 1306 (11.0) | 374 (12.0) | 25 (16.0) | 342 (11.9) |
| Latina | 1935 (16.4) | 540 (17.3) | 44 (28.2) | 482 (16.7) |
| Non-Latina Asian | 1245 (10.5) | 349 (11.2) | 4 (2.6) | 339 (11.8) |
| Non-Latina white | 6185 (52.3) | 1670 (53.5) | 76 (48.7) | 1542 (53.5) |
| Other/unknown | 1160 (9.8) | 189 (6.1) | 7 (4.5) | 176 (6.1) |
| Insurance | ||||
| Private | 9008 (76.1) | 2389 (76.5) | 102 (65.4) | 2224 (77.2) |
| Medicaid | 1892 (16.0) | 523 (16.8) | 42 (26.9) | 465 (16.1) |
| Medicare | 163 (1.4) | 24 (0.8) | 1 (0.6) | 23 (0.8) |
| Otherc | 542 (4.6) | 135 (4.3) | 7 (4.5) | 125 (4.3) |
| Self-pay | 237 (2.0) | 51 (1.6) | 4 (2.6) | 44 (1.5) |
| Parity | ||||
| Nulliparous | 5872 (49.6) | 1510 (48.4) | 55 (35.3) | 1440 (50.0) |
| Multiparous | 5970 (50.4) | 1612 (51.6) | 101 (64.7) | 1441 (50.0) |
| Body Mass Index | ||||
| Underweight (BMI<18.5) | 259 (2.2) | 59 (1.9) | 2 (1.3) | 55 (1.9) |
| Normal weight (18.5≤BMI<25) | 4726 (39.9) | 1202 (38.5) | 45 (28.9) | 1131 (39.3) |
| Overweight (25≤BMI<30) | 3623 (30.6) | 1005 (32.2) | 57 (36.5) | 920 (31.9) |
| Class 1 or 2 obesity (30≤BMI<40) | 2443 (20.6) | 635 (20.3) | 42 (26.9) | 565 (19.6) |
| Class 3 obesity (BMI≥40) | 330 (2.8) | 85 (2.7) | 2 (1.3) | 83 (2.9) |
| Gestational age at delivery | ||||
| Early term (37-38 weeks) | 3110 (26.3) | 792 (25.4) | 48 (30.8) | 726 (25.2) |
| Full term (39-40 weeks) | 7686 (64.9) | 2061 (66.0) | 92 (59.0) | 1910 (66.3) |
| Late term (41 weeks) | 1020 (8.6) | 263 (8.4) | 16 (10.3) | 239 (8.3) |
| Post-term (42+ weeks) | 26 (0.2) | 6 (0.2) | 0 (0.0) | 6 (0.2) |
aColumn percentages do not sum to 100 in all cases due to missing data; bSum of positive and negative cases is not equal to total number of births in cohort because 85 deliveries were missing SARS-CoV-2 PCR test data; cOther race/ethnicity includes American Indian or Alaska Native, Native Hawaiian or Pacific Islander, and other or unspecified race/ethnicity