Table 1.
Clinical characteristics of subjects.
| Individuals | Characteristics | PTB < 7 Days (n = 11) |
PTB ≥ 7 Days (n = 11) |
TB (n = 21) |
|---|---|---|---|---|
| Mother | Age (years) | 33.3 ± 3 | 30.8 ± 5 | 33.5 ± 4 |
| Pre-pregnancy-BMI (kg/m3) | 21.5 ± 2.7 | 20.4 ± 3 | 21.5 ± 2.3 | |
| GAS (weeks) | 26.3 ± 5.2 | 25.4 ± 5.4 | 23.5 ± 3.4 | |
| GAB (weeks) | 26.6 ± 5.2 a,b | 33.4 ± 3 a,c | 39.3 ± 0.8 b,c | |
| CL (mm) | 9.5 ± 13.8 a,b | 16.5 ± 13.5 a,c | 29.7 ± 4.9 b,c | |
| WBC (1 × 103/µL) | 11.5 ± 4.2 | 10.6 ± 2.6 | 9.3 ± 1.7 | |
| CRP (mg/dL) | 1 ± 1.7 | 0.4 ± 0.4 | 0.3 ± 0.2 | |
| Infant | Birth weight (g) | 1089.2 ± 596.8 a,b | 2078.6 ± 672.3 a,c | 3282.4 ± 221.2 b,c |
| APGAR 1 (min) | 5 ± 2.8 b | 6.6 ± 2.8 c | 9.8 ± 0.6 b,c | |
| APGAR 5 (min) | 7.1 ± 1.9 a,b | 8.7 ± 1.3 a,c | 10 ± 0.2 b,c |
Kruskal–Wallis test was used for the statistical analysis. Data are presented as the mean ± standard deviation, and p < 0.05 considered as significant. a: PTB < 7 d vs. PTB ≥ 7 d; b: PTB < 7 d vs. TB; c: PTB ≥ 7 d vs. TB. PTB, preterm birth, TB, term birth; BMI: body mass index; GAS: gestational age at sampling; GAB: gestation age at birth; CL: cervical length; WBC: white blood cell; CRP: C-reactive protein; APGAR: appearance, pulse, grimace, activity, respiration.