Table 2.

Clinical characteristics of the study population

Groups		Number of samples	Gestational age at amniocentesis weeks; median (IQR)	IL-6 concentration ng/mL; median (IQR)	Gestational age at delivery weeks; median (IQR)
Absence of intra-amniotic infection/inflammation	15-20 weeks	6	17.7 (16.4-18.8)	0.3 (0.1-0.8)	38.4 (38.4-39.3)
	20-30 weeks	8	23.2 (21.6-27.2)	0.5 (0.2-0.9)	28.6 (24.5-35.6)
	30-36 weeks	9	32.3 (31.4-33.3)	0.3 (0.2-0.4)	33.9 (32.3-36)
	37-40 weeks	34	39 (38.9-39.3)	0.3 (0.3-0.7)	39 (38.9-39.3)
Intra-amniotic infection/inflammation (18-40 weeks)		9	38.1 (22.3-39.6)	70.6 (6.4-118.7)	38.1 (22.7-39.6)

IQR, interquartile range