| 3GC | Third-generation cephalosporin |
| 3GC-R | Third-generation cephalosporin-resistant |
| 3GC-S | Third-generation cephalosporin-susceptible |
| BSI | Bloodstream infection |
| CO | Community-onset |
| HO | Hospital-onset |
| DDD | Defined daily dose |
| ITSA | Interrupted time series analysis |
| NCIC | National Center for Infection Control (NCIC) |
| HAI | Hospital-acquired infection |
| ESBL | Extended-spectrum beta-lactamase |
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