Fig. 5

The relationship between each VALENCIA-assigned sub-CST and Nugent score (a) and vaginal pH (b). Nugent score was separated into high (score 8–10), intermediate (score 4–7), and low (score 0–3) categories. Vaginal pH was split into four categories: less than or equal to 4.5, between 4.5 and 5.0, between 5.0 and 5.5, and greater than or equal to 5.5