Table 1.

Clinical characteristics of the study population

Characteristics	Preterm prelabor rupture of membrane (n=56)
Maternal age (years)	26.5 (21.7–31.5)
Nulliparity	33.9% (19/56)
Prior preterm delivery	17.9% (10/56)
Gestational age at amniocentesis (weeks)	28.8 (25.7–31.5)
Amniotic fluid glucose (mg/dl)	17 (10–27)
Amniotic fluid white blood cell (cell/m3)	20 (1–145.5)
Microbial invasion of the amniotic cavity (%)	25% (14/56)
Intra-amniotic inflammation (ELISA IL-6 ≥ 2,600 pg/ml) (%)	60.7% (34/56)
Gestational age at delivery (weeks)	30.8 (27.1–32.9)
Interval from amniocentesis to delivery (days)	3 (1–12.75)
Delivery at < 28 weeks of gestation (%)	33.9% (19/56)
Delivery at < 34 weeks of gestation (%)	96.4% (54/56)
Acute histological chorioamnionitis (%)*	57.9% (15/26)
Acute funisitis (%)*	46.2% (12/26)
Acute inflammatory lesions of placenta (%)*	57.9% (15/26)

Data presented as median (interquartile range) or % (n)

^*Included only patients who had interval from amniocentesis to delivery ≤ 3 days.