Figure 2. . A) Changes in fluoroquinolone use (x axis) and resistance in Pseudomonas aeruginosa (y axis) for 9 hospitals with complete data, 1999–2003. Origin is median values of fluoroquinolone use and resistance in 1999. DDD/1,000 PD, defined daily doses/1,000 patient-days. FQ-R PSA, fluoroquinolone-resistant P. aeruginosa; MRSA, methicillin-resistant Staphylococcus aureus. B) Changes in fluoroquinolone use (x axis) and resistance (y axis) in S. aureus for 9 hospitals with complete data, 1999–2003.
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