Mean Number of Bacteria by Membrane Layer Among Clinical Groups and Amnion/Chorion Ratio.

Values shown represent mean number of bacteria visualized within the amnion, the chorion, and the representative A/C ratio. Bacterial mean reporting includes standard errors and p values were <0.0001.
PPROM =  Preterm, premature rupture of membranes (subjects between 24 and 34 weeks following confirmation of rupture of membranes by physical exam).
Preterm Labor  =  subjects between 24 and 34 weeks of gestation with spontaneous preterm labor.
Preterm, No Labor  =  subjects between 24 and 34 weeks of gestation delivered preterm without labor exposure.
Term  =  subjects between 37 and 41 weeks with labor.
Term, No Labor  =  subjects between 37 and 41 weeks without exposure to labor.
Rupture  =  sample of membrane collected at site of rupture.
Distant  =  sample of membrane collected from an area distant to rupture site, most commonly near the placenta.