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Impact of the intervention on intradermal skin test, prophylactic antibiotics, and drug costs.
| Effect size∗ (95% confidence intervals) | P | |
| Patients with intradermal skin tests, OR | 0.008 (0.005, 0.014) | <.001 |
| Cephalosporin as POABP, OR | 5.28 (2.95, 9.43) | <.001 |
| Cost | ||
| Total drugs per patient ($), Coef | –7.34 (–165.61, 150.93) | .928 |
| Antibiotics cost per patient ($), Coef | –150.21 (–225.00, –75.43) | <.001 |
| Antibiotics cost percentage, Coef | –3.2% (–4.7%, –1.7%) | <.001 |
