Fig. 1

Serum levels of tested biomarkers depending on gestational age at delivery. A CXCL10 B CCL2 C Serpin B7 D Leucocyte count E CRP F CXCL10 / CCL2 Ratio as a quotient of both chemokines. CXCL10 and CCL2 were measured in all participants (n = 109): < 34 weeks (n = 16); 34 + 0 – 36 + 6 weeks (n = 20); > 37 weeks (n = 73). Serpin B7 was measured in a subgroup (n = 52): < 34 weeks (n = 16); 34 + 0 – 36 + 6 weeks (n = 18); > 37 weeks (n = 17). Serum levels of CRP and leucocyte counts were available for 98 participants including all cases with preterm birth. P-values were computed by Kruskall-Wallis-Test and adjusted using the Bonferroni correction with pairwise comparison. Brackets revealed significant between group differences with adjusted p-values: * < 0.05, ** < 0.01