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Table 2 Basic maternal characteristics of the LD, SPTB, and control groups

From: Labor dystocia and risk of histological chorioamnionitis and funisitis: a study from a single tertiary referral center

  Participants  
LD SPTB Control  
Variable n = 83 n = 144 n = 90 P-value
Maternal age, years 34.2 (5.8) 31.9 (6.2) 31.4 (6.1) < 0.01a
Maternal age category, %
  <  30 years 24.1 34.7 38.9 < 0.05b
 30–39 years 54.2 56.9 52.2
  > 40 years 21.7 8.3 8.9
Maternal height, cm 157 (6.0) 158 (5.9) 158 (5.8) 0.343a
Primiparous, % 91.6 47.2 58.9 < 0.01b
Cesarean section, % 83.1 64.6 66.7 < 0.05b
Gestational age at delivery, weeks 39.6 (1.2) 30.7 (5.1) 35.9 (3.4) < 0.01a
Birth weight at delivery, g 3143 (398) 1637 (836) 2160 (770) < 0.01a
  1. Results are expressed as mean (standard deviation) unless specified otherwise
  2. LD labor dystocia, SPTB spontaneous preterm birth
  3. aP-value: one-way analysis of variance
  4. bP-value: chi-squared test