Table 3.
Characteristics of the study population by adverse pregnancy outcomes
| Preterm birtha | Small for gestational agea | Hypertensive disorder of pregnancy | ||||
|---|---|---|---|---|---|---|
| Yes N (column %) |
No N (column %) |
Yes N (column %) |
No N (column %) |
Yes N (column %) |
No N (column %) |
|
| N | 1082 | 13170 | 1469 | 12764 | 938 | 13371 |
| Maternal age—mean (SD) | 31.4 (5.5) | 31.7 (5.0) | 30.9 (5.5) | 31.8 (5.0) | 31.9 (5.5) | 31.6 (5.1) |
| Race | ||||||
| White | 441 (40.8) | 6419 (48.7) | 553 (37.6) | 6302 (49.4) | 434 (46.3) | 6454 (48.3) |
| Hispanic/Latino | 217 (20.1) | 2306 (17.5) | 248 (16.9) | 2273 (17.8) | 161 (17.1) | 2372 (17.7) |
| Black/African American | 158 (14.6) | 1173 (8.9) | 218 (14.9) | 1107 (8.7) | 149 (15.9) | 1187 (8.9) |
| Asian/Pacific Islander | 59 (5.4) | 1166 (8.9) | 196 (13.3) | 1029 (8.0) | 44 (4.7) | 1186 (8.9) |
| Other race | 111 (10.2) | 1089 (8.3) | 139 (9.5) | 1057 (8.3) | 71 (7.6) | 1131 (8.4) |
| Unknown race | 96 (8.9) | 1017 (7.7) | 115 (7.8) | 996 (7.8) | 79 (8.4) | 1041 (7.8) |
| Insurance status | ||||||
| Private | 775 (71.6) | 10511 (79.8) | 1094 (74.5) | 10181 (79.8) | 702 (74.8) | 10629 (79.5) |
| Public | 304 (28.1) | 2613 (19.8) | 370 (25.2) | 2539 (19.9) | 234 (25.0) | 2694 (20.1) |
| None | 3 (0.3) | 46 (0.4) | 5 (0.3) | 44 (0.3) | 2 (0.2) | 48 (0.4) |
| Multiparous | 473 (43.7) | 6063 (46.0) | 531 (36.2) | 5994 (47.0) | 352 (37.5) | 6207 (46.4) |
| History of asthma | 123 (11.4) | 1240 (9.4) | 154 (10.5) | 1208 (9.5) | 116 (12.4) | 1254 (9.4) |
| History of mental health condition | 142 (13.1) | 1253 (9.5) | 127 (8.7) | 1266 (9.9) | 115 (12.3) | 1288 (9.6) |
| History of substance use | 19 (1.8) | 111 (0.8) | 32 (2.2) | 95 (0.7) | 15 (1.6) | 116 (0.9) |
| Prevalent hypertension | 52 (4.8) | 147 (1.1) | 28 (1.9) | 169 (1.3) | 111 (11.8) | 88 (0.7) |
| Prevalent diabetes | 38 (3.5) | 106 (0.8) | 4 (0.3) | 140 (1.1) | 27 (2.9) | 119 (0.9) |
| Gestational diabetes | 91 (8.4) | 601 (4.6) | 77 (5.2) | 615 (4.8) | 92 (9.8) | 606 (4.5) |
| Infant sex | ||||||
| Male | 586 (54.2) | 6689 (50.8) | 750 (51.1) | 6518 (51.1) | 463 (49.4) | 6838 (51.1) |
| Female | 496 (45.8) | 6481 (49.2) | 719 (48.9) | 6246 (48.9) | 475 (50.6) | 6533 (48.9) |
| Proportion of tract below poverty level—mean (SD) | 18.2 (12.1) | 15.8 (10.8) | 17.7 (12.0) | 15.7 (10.8) | 17.6 (11.9) | 15.8 (10.8) |
aMissing outcomes due to implausible values: preterm birth: n = 57; small for gestational age: n = 76