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.