Data are presented as either mean±SD or median (IQR) according to
variable distributions. WoG, weeks of gestation; PTB, preterm birth. *
P<0.05, Chi-squared test or Fisher exact test for categorical
variables, Kruskal-Wallis rank-sum
test or Welch’s ANOVA and Mann-Whitney U or Welch’s t test for
continuous variables. NA, ”not
available”, insufficient subjects.
Table 3 . Optimal cut-point of IL-6 for identification of
spontaneous labor (Stage 4).