Table 1.
Description of cohort studied in this project
| Preterm delivery <37 weeks (n = 45) | Term delivery ≥39 weeks (n = 90) | |
|---|---|---|
| Mean age (years)a | 26 (5.68) | 25.9 (5.43) |
| Ancestry/ethnicity (no. (%)) | ||
| African | 35 (77.8) | 71 (78.9) |
| European | 6 (13.3) | 13 (14.4) |
| Hispanic | 3 (6.7) | 5 (5.6) |
| Native American | 1 (2.2) | 1 (1.1) |
| Household income (no. (%))b | ||
| <US$20,000 | 29 (72.5) | 66 (77.7) |
| US$20,000–59,999 | 9 (22.5) | 15 (17.6) |
| US$60,000+ | 2 (5.0) | 4 (4.7) |
| Vaginal delivery (no. (%)) | 38 (84.4) | 74 (82.2) |
| Previous preterm (no. (%)) | 14 (31.1) | 9 (10.0) |
| Preterm premature rupture of the membranes (no. (%)) | 26 (57.8) | 0 (0) |
aStandard deviation listed in parentheses.
bMissing values n = 5 (PTB), n = 5 (TB).