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Recurrence-free days for gram-negative bloodstream infection from a complicated urinary tract infection source, comparing intravenous β-lactam (IVBL) versus oral stepdown therapies. Data represent cumulative incidence curves generated from the propensity-weighted Cox proportional hazards models. Abbreviations: FQ, fluoroquinolone; HBBL, high-bioavailability β-lactam; TMP-SMX, trimethoprim-sulfamethoxazole (all taken orally).
