Variation in BV by stage of menstrual cycle and BV group
| Stage of menstrual cycle | BV positive/all readings | % | OR* | 95% CI |
|---|---|---|---|---|
| *Adjusted for recent sex, sanitary protection method, and correlation within woman. | ||||
| †n, number of women. | ||||
| BV group A (n = 11)† | ||||
| 14+ days | 1/350 | 0.3 | 1 | |
| <7 days | 15/165 | 9.1 | 35.9 | 4.8 to 268.6 |
| 7–13 days | 5/123 | 4.1 | 14.9 | 1.4 to 152.2 |
| BV group B1 (n = 5) | ||||
| 14+ days | 15/143 | 10.5 | 1 | |
| <7 days | 29/77 | 37.7 | 6.56 | 4.39 to 9.80 |
| 7–13 days | 14/58 | 24.1 | 2.51 | 1.29 to 4.89 |
| BV group B2 (n = 6) | ||||
| 14+ days | 93/163 | 57.1 | 1 | |
| <7 days | 57/94 | 60.6 | 1.35 | 0.58 to 3.18 |
| 7–13 days | 51/70 | 72.9 | 2.35 | 1.74 to 3.18 |
| BV group C (n = 8) | ||||
| 14+ days | 201/239 | 84.1 | 1 | |
| <7 days | 100/124 | 80.6 | 0.81 | 0.42 to 1.54 |
| 7–13 days | 84/90 | 93.3 | 2.60 | 1.24 to 5.44 |