Association between Lactobacillus colonisation in the vagina and acquisition of bacterial vaginosis (BV)
| Lactobacillus spp. | # BV acquisitions per woman-years | Rate Per 100 woman-years | Unadjusted HR (95% CI) | p Value |
| L crispatus | ||||
| Present | 14/35.5 | 39 | 0.47 (0.24 to 0.90) | 0.023 |
| Absent | 26/29.8 | 87 | ||
| L jensenii | ||||
| Present | 18/22.6 | 80 | 1.42 (0.76 to 2.66) | 0.270 |
| Absent | 22/42.7 | 52 | ||
| L gasseri | ||||
| Present | 11/16.1 | 68 | 1.08 (0.54 to 2.17) | 0.820 |
| Absent | 29/49.3 | 59 | ||
| L iners | ||||
| Present | 13/20.2 | 64 | 1.13 (0.60 to 2.13) | 0.695 |
| Absent | 27/45.1 | 60 | ||