Table 1.
Cohort characteristics
| sPTB | TB | Difference (P value) | |
|---|---|---|---|
| N | 80 | 152 | |
| Race (N (%)) | 0.417 | ||
| Black | 57 (71.25%) | 116 (76.3%) | 0.568 |
| White | 21 (26.25%) | 30 (19.7%) | 0.331 |
| Other | 2 (2.5%) | 6 (4%) | 0.666 |
| Nulliparous (N (%)) | 29.0 (36.2%) | 55.0 (36.2%) | 0.894 |
| PTB history (N (%)) | 34 (42.5%) | 28 (19.2%) | 0.0003 |
| GA at delivery (median weeks (range)) | 34 (21–36) | 39 (38–39) | <0.0001 |
| BMI (kg m−2 mean ± s.d.) | 30.1 ± 7.8 | 30.6 ± 7.2 | 0.65 |
| Age (years mean ± s.d.) | 29 ± 6 | 28 ± 6 | 0.28 |
GA, gestational age; P, two-sided Fisher’s exact or Mann–Whitney U test. Bold indicates P < 0.05.