Table 1 Characteristics of Participants
|  | Total (n = 4,231) | Currently Pregnant (n = 3,168) | Recently Pregnant (n = 1,063) |
|---|---|---|---|
| Â | n (%) | Â | |
Age at enrollment | |||
 18–24 | 593 (14.0) | 460 (14.5) | 133 (12.5) |
 25–34 | 2,815 (66.5) | 2,115 (66.8) | 700 (65.9) |
 35–50 | 823 (19.5) | 593 (18.7) | 230 (21.6) |
Employment at first COVID-19 symptoms | |||
 None | 1,341 (31.7) | 897 (28.3) | 444 (41.8) |
 Mostly from home | 1,143 (27.0) | 864 (27.3) | 279 (26.2) |
 In healthcare | 782 (18.5) | 631 (19.9) | 151 (14.2) |
 In an office | 420 (9.9) | 329 (10.4) | 91 (8.6) |
 Other | 407 (9.6) | 337 (10.6) | 70 (6.6) |
 In food services | 95 (2.2) | 80 (2.5) | 15 (1.4) |
Economic class | |||
 Wealthy | 535 (12.6) | 396 (12.5) | 139 (13.1) |
 Middle class | 1,953 (46.2) | 1,484 (46.8) | 469 (44.1) |
 Lower-middle class | 1,196 (28.3) | 892 (28.2) | 304 (28.6) |
 Poor | 458 (10.8) | 336 (10.6) | 122 (11.5) |
Highest educational level | |||
 Graduate education | 1,180 (27.9) | 935 (29.5) | 245 (23.0) |
 College | 1,431 (33.8) | 1,046 (33.0) | 385 (36.2) |
 High school | 1,343 (31.7) | 994 (31.4) | 349 (32.8) |
 Less than high school | 236 (5.6) | 164 (5.2) | 72 (6.8) |
Health coverage | 3,558 (84.1) | 2,668 (84.2) | 890 (83.7) |
Pre-pregnancy BMI | |||
  < 25.0 | 1,596 (37.7) | 1,216 (38.4) | 380 (35.7) |
 25.0–29.9 | 911 (21.5) | 670 (21.1) | 241 (22.7) |
  ≥ 30 | 821 (19.4) | 603 (19.0) | 218 (20.5) |
Primiparous | 1,571 (37.1) | 1,178 (37.2) | 393 (37.0) |
High-risk pregnancy | 959 (22.7) | 685 (21.6) | 274 (25.8) |
Healthcare visit during pregnancy | 3,580 (84.6) | 2,662 (84.0) | 918 (86.4) |
Pre-pregnancy general health | |||
 Excellent | 1,563 (36.9) | 1,142 (36.0) | 421 (39.6) |
 Very good | 1,236 (29.2) | 935 (29.5) | 301 (28.3) |
 Good | 866 (20.5) | 657 (20.7) | 209 (19.7) |
 Fair/Poor | 138 (3.3) | 113 (3.6) | 25 (2.4) |
# Household (mean, SD) | 2.51 (1.7) | 2.45 (1.7) | 2.70 (1.8) |
Any household member positive | 1,566 (37.0) | 1,190 (37.6) | 376 (35.4) |