TABLE 2.

Association of adverse pregnancy outcomes with isolation of lactobacillus from the vagina and with maximum H2O2 isolate production

Adverse outcome (no. of women affected/total)% (no.) of women with adverse outcomeP2 for trend)
Vaginal lactobacilli were:Maximum H2O2 isolate production (mg/liter) was:
AbsentPresent0-3a3-1010-3030-100
Bacterial vaginosis (11/72)42 (5)c10 (6)36 (5)27 (6)0 (0)0 (0)0.0007
Preterm birth (18/73)42 (5)21 (13)36 (5)32 (7)11 (2)22 (4)0.19
Chorioamnionitis (12/37)56 (5)25 (7)50 (5)50 (4)22 (2)10 (1)0.031
Chorioamnionitis and/or preterm birth (26/73)67 (8)b30 (18)57 (8)45 (10)16 (3)28 (5)0.028
  • a Includes women from whom no lactobacillus isolates were isolated.

  • b P = 0.014.

  • c P = 0.005.