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A summary of the range of the percentage time above the minimal inhibitory concentration (%T > MIC) for carbapenems, penicillins, and cephalosporins for Gram-positive and Gram negative pathogens is depicted (Craig, 1997; Craig, 1998; Ambrose et al., 2007).
| Pathogen | Carbapenems (%T > MIC) | Penicillins (%T > MIC) | Cephalosporins (%T > MIC) |
|---|---|---|---|
| Gram positive | 20–30 | 30–40 | 40–50 |
| Gram negative | 40–50 | 50–60 | 60–70 |
