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Table 1 Maternal characteristics and maternal and neonatal outcomes according to gestational age at birth

From: Efficacy of serum procalcitonin to predict spontaneous preterm birth in women with threatened preterm labour: a prospective observational study

  Term delivery
n = 94 (75.8%)
Preterm delivery
n = 30 (24.2%)
p-value
Maternal characteristics
 Maternal age (years) 26.9 ± 4.7 28.5 ± 5.0 0.12
 BMI before pregnancy (kg/m2) 21.9 ± 4.4 21.3 ± 3.2 0.68
 Nulliparity 51 (54.3) 16 (53.3) 0.93
Variables at admission for TPL
 Gestational age at sampling (weeks) 32.5 [30.1–33.1] 32.5 [31.1–33.4] 0.48
 Bishop score 3.9 ± 1.9 4.7 ± 1.9 0.08
 Cervical length (mm) 19.6 ± 5.6 17.9 ± 7.3 0.20
 PCTa (ng/mL) 0.039 [0.030–0.050] 0.042 [0.034–0.054] 0.56
 White blood cell count (× 109/L) 11.0 ± 2.2 11.0 ± 2.2 0.91
 C-reactive protein (mg/L) 3.8 ± 2.5 3.6 ± 2.3 0.76
 Positive cervicovaginal swab cultures 5 (5.4) 5 (17.2) 0.06
Maternal outcome
 Gestational age at delivery* (w) 39.0 ± 1.2 35.0 ± 1.7 < 0.001
 Interval between admission to delivery (days) 51.6 ± 18.1 21.7 ± 17.1 < 0.001
 Caesarean delivery 1 (1.1) 3 (10.0) 0.04
 Neonatal outcome
 Birth weight (g) 3068.3 ± 392.4 2381.2 ± 422.7 < 0.001
 5 min Apgar score (points) 9.7 ± 1.1 9.4 ± 1.9 0.39
 5-min Apgar score < 7 4 (4.4) 1 (3.4) 0.99
 Transfer to NICU 3 (3.2) 4 (13.3) 0.06
 Neonatal death 0 0
  1. TPL Threatened preterm labour
  2. *Gestational age at sampling (weeks) is expressed as median [interquartile range]
  3. aSerum procalcitonin (PCT) level is expressed as median [interquartile range]
  4. Continuous data are expressed as means ± standard deviations; discrete data are expressed as n or n (%). Student t test, χ2 test, non-parametric Mann-Whitney test, and Fisher’s exact test were used as appropriate. A p-value of 0.05 was considered significant