Comparison of single agents selected by pediatricians with different seniority levels
| Medications, n (%) | <10 y (n=28) | 10–20 y (n=51) | >20 y (n=66) | χ2 | P value |
| Beta-lactamase inhibitors | 16 (57.1) | 18 (35.3) | 32 (48.5) | 4.345 | 0.361 |
| Carbapenems | 6 (21.4) | 19 (37.3) | 21 (31.8) | ||
| Cephalosporins | 6 (21.4) | 14 (27.5) | 13 (19.7) |