Patient characteristics, comorbidities and risk factors by THC status, n=1540
| Overall, n=1540 | THC positive, n=483 | No substance, n=1057 | |
| Patient characteristics | |||
| Maternal age, mean(SD) | 27.2 (5.6) | 26.5 (5.1) | 27.6 (5.7) |
| Race and ethnicity, n (%) | |||
| White | 1231 (79.9) | 408 (84.5) | 823 (77.9) |
| Black | 47 (3.1) | 16 (3.3) | 31 (2.9) |
| Hispanic | 115 (7.5) | 22 (4.6) | 93 (8.8) |
| Other/unknown | 147 (9.6) | 37 (7.7) | 110 (10.4) |
| Comorbidities and risk factors, n (%) | |||
| Tobacco use | 612 (39.7) | 214 (44.3) | 398 (37.7) |
| Alcohol use | 35 (2.3) | 12 (2.5) | 23 (2.2) |
| Diabetes | 211 (13.7) | 53 (11) | 158 (15) |
| Hypertension | 289 (18.8) | 84 (17.4) | 205 (19.4) |
| Cervical insufficiency | 19 (1.2) | 4 (0.8) | 15 (1.4) |
| Multiple gestation | 41 (2.7) | 11 (2.3) | 30 (2.8) |
THC, tetrahydrocannabinol.