Table 4.
Hospitalization Characteristics
| Characteristic | Influenza-Related n = 629 | Noninfluenza Hospitalization n = 44 095* | P |
|---|---|---|---|
| Length of stay, days | |||
| Median (IQR) | 5 (3–8) | 5 (3–8) | .3 |
| Mean (SD) | 8.9 (13.5) | 7.3 (8.6) | <.0001 |
| Day of influenza testing, median (IQR)† | 0 (0–1) | – | |
| Neuraminidase-inhibitor, n (%) | 343 (54.5) | – | |
| Day of initiation, median (IQR) | 1 (0–2) | – | |
| Broad-spectrum antibiotics, n (%) | 567 (90.1) | 25 336 (57.5) | <.0001 |
| Day of initiation, median (IQR) | 0 (0–0) | 0 (0–1) | .0001 |
| Antibiotic days per 1000 hospital days (95% CI) | 732.3 (720.6–743.9) | 545.9 (544.1–547.6) | <.0002 |
| Receipt of ICU-level care, n (%) | 66 (10.5) | 4177 (9.5) | .4 |
| Days of ICU-level care per 1000 hospital days (95% CI) | 85.2 (79.4–94.5) | 39.5 (38.8–40.1) | <.0002 |
Abbreviations: ICU, intensive care unit; IQR, interquartile range; SD, standard deviation.
*Hospitalizations during the influenza season-adjusted period.
†Median day of influenza testing for those in whom inpatient testing was performed (n = 402).