Table 2. Characteristics of participants in the analysis of maternal plasma samples.
| SPB | Term birth | P-valuea | |
| Number of participants (n) | 10 | 27 | - |
| Maternal age in years (median, IQR) | 32 (28–33) | 32 (27–34) | 0.707 |
| Nulliparous (n, %) | 6 (60%) | 16 (59%) | 1.000 |
| Weeks at blood-taking (median, IQR) | 30.9 (27.0–32.1) | 31.0 (27.8–32.3) | 0.891 |
| Weeks at delivery (median, IQR) | 30.9 (27.0–32.1) | 39.1 (38.3–40.3) | <0.001 |
| Birthweight (median, IQR) | 1468(1135–1580) | 3240(2976–3392) | <0.001 |
| Rupture of membrane >24 h before delivery (n, %) | 4 (40%) | 3 (11%) | 1.000 |
a
Mann-Whitney rank sum test for continuous variables. Fisher exact test for nominal variables.
SPB, spontaneous preterm birth.