①The ”Number” in column 4 refers to the number of patients with vaginitis; ②The “rate of mixed infection” in column 5 refers to the ratio of mixed infections to total vaginitis; ③The rates in the following columns refer to the ratio of each item in mixed infection; ④The “Diagnostic criteria” in column 14 refers to RM and NAAT. RM: The reference methods for BV were Nugent’s score and Amsel’s criteria. The reference methods for VVC and TV were wet mount and culture. The reference method for AV was wet mount based on the criterion by Donders. NAAT: Nucleic acid amplification