Statistical analysis
REGRESSION, PREGNANCY COMPLICATIONS
Statistical procedures were performed using SPSS by IBM V.25 and Statistica 14.0 TIBCO software. Differences in baseline characteristics were analysed using unpaired t-test and Fischer’s exact test. s-PROK1 was positively skewed and therefore log-transformed. Logistic regression analysis was used to analyse whether s-PROK1 predicts pregnancy complications. Differences of s-PROK1 between subgroups were analysed by median test, followed by pairwise median test with Bonferroni correction, in case of statistical significance. Correlations between s-PROK1 and other variables were evaluated using Spearman’s rank order correlation test. p<0.05 was considered as statistically significant.