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Frequency of BV in (A) time period prior to Cu-IUD initiation and while using Cu-IUD and (B) in time period prior to Cu-IUD initiation, while using Cu-IUD, and following Cu-IUD discontinuation. Adjusted hazard ratios and 95% confidence intervals from Andersen-Gill proportional hazards models are shown below each figure. Abbreviations: BV, bacterial vaginosis; Cu-IUD, copper intrauterine device.
