| 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) |