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 for continuous variables. NA, ”not available”, insufficient subjects.
Table 2. General characteristics of women included in the study stratified by term and preterm delivery, as well as sub-categories of preterm birth.