TABLE 2.
MRU during hospitalization (substudy)
| CRFs a | No CRFs | |||
|---|---|---|---|---|
| Influenza (n = 153) | RSV (n = 99) | Influenza (n = 25) | RSV (n = 13) | |
| Length of hospital stay, b mean (SD), days | 4.7 (3.0) c | 5.4 (3.1) d | 4.8 (4.6) | 6.7 (10.1) |
| Median (range), days | 4 (1, 18) | 4.5 (2, 17) | 3 (2, 21) | 3 (1, 38) |
| ≤3 days, n (%) | 67 (43.8) | 30 (30.3) | 13 (52.0) | 7 (53.8) |
| >3 days, n (%) | 86 (56.2) | 69 (69.7) | 12 (48.0) | 6 (46.2) |
| O2 supplementation given, n (%) | 91 (59.5) | 79 (79.8) | 13 (52.0) | 7 (53.8) |
| O2 supplementation duration, mean (SD), days | 4.5 (3.6) e | 4.2 (2.8) f | 4.1 (4.3) g | 4.2 (4.6) h |
| Mechanical ventilation given, n (%) | 3 (2.0) | 0 (0) | 0 (0) | 0 (0) |
| ICU stay during hospitalization, n (%) | 8 (5.2) | 8 (8.1) | 1 (4.0) | 1 (7.7) |
| ICU stay duration, mean (SD), days | 4.8 (1.3) | 2.5 (1.0) i | 3.0 (−) | 4.0 (−) |
| ICU stay duration, median (range), days | 4.5 (3, 7) | 2 (2, 4) i | 3 (3, 3) | 4 (4, 4) |
Abbreviations: COPD, chronic obstructive pulmonary disease; CRF, core risk factor; ICU, intensive care unit; MRU, medical resource utilization; RSV, respiratory syncytial virus; SD, standard deviation.
CRFs included any one or a combination of the following: age ≥65 years, chronic heart disease, COPD, chronic renal disease, and asthma.
Data from four subjects with censored length of hospital stay data not included in mean (SD) and median (range) results. Censored data included three patients with influenza and CRFs (>2, >3, and >6 days) and one patient with RSV and CRFs (<3 days).
Data available for 150/153 patients.
Data available for 98/99 patients.
Data available for 82/91 patients given supplemental oxygen.
Data available for 73/79 patients given supplemental oxygen.
Data available for 13/13 patients given supplemental oxygen.
Data available for 6/7 patients given supplemental oxygen.
Data available for 4/8 patients with ICU stays during hospitalization.