Table 2.
Relative Risk of Inpatient Antibiotic Use
| Risk Factor | Adjusted Relative Riska (95% CI) |
|---|---|
|
| |
| Age in years | 1.01 (1.00,1.02) |
| History of fever at home | 1.66 (1.22,2.27) |
| Three or more days of illness (vs <3) | 1.05 (0.91,1.22) |
| History of asthma | 0.98 (0.85,1.13) |
| Wheeze on exam in the ED | 0.87 (0.75,1.01) |
| Focal crackles on exam in the ED | 1.10 (0.99,1.22) |
| Focal decreased breath sounds on exam in the ED | 0.98 (0.89,1.09) |
| Receipt of antibiotics in the EDb | 4.33 (2.63,7.13) |
| Severe illness in the ED | 0.91 (0.79,1.05) |
| Receipt of supplemental oxygen in inpatient setting | 1.29 (1.11,1.50) |
| CXR findings | See Table 3 |
a
Adjusted for all the other risk factors listed in this table and a statistically significant (p<0.001) interaction effect between receipt of antibiotics in the ED and CXR findings. The results of the interaction are displayed in Table 3. See supplemental Table 1 for unadjusted RRs.
b
Among those with normal CXR (i.e., the reference group for CXR findings).