Table 3. Complications and Health Care Use Within 4 Weeks of ARI Onset of RSV-Positive ARI and RSV-Negative ARI During Prepandemic RSV Season.
| Characteristic | No. (%) | P value | |
|---|---|---|---|
| RSV positive-ARI episodes (N = 58) | RSV negative-ARI episodes (N = 909) | ||
| Complication during ARI | |||
| No ARI-related complications or hospitalizations | 57 (98.3) | 893 (98.2) | .98 |
| Pneumonia | 1 (1.7) | 11 (1.2) | .73 |
| Hospitalization | 1 (1.7) | 11 (1.2) | .73 |
| Death | 0 | 1 (0.1) | .80 |
| Health care uses | |||
| Outpatient visits | 13 (22.4) | 140 (15.4) | .16 |
| Emergency department visits | 2 (3.4) | 18 (2.0) | .45 |
| Hospitalization without ICU admission | 1 (1.7) | 8 (0.9) | .52 |
| Length of stay in hospital in days among those hospitalized without ICU | .39 | ||
| Mean (SD) | 1.0 (NA) | 2.8 (3.4) | |
| Median (range) | 1 (1-1) | 1.5 (1-11) | |
| Hospitalization with ICU admission | 0 | 3 (0.3) | .66 |
| Length of stay in hospital (including ICU), in days, among those hospitalized with ICU | |||
| Mean (SD) | 5.3 (1.5) | ||
| Median (range) | 5 (4-7) | ||
| Severity | .09 | ||
| Mild | 0 | 22 (2.4) | |
| Moderate | 2 (3.4) | 99 (10.9) | |
| Severe | 56 (96.6) | 788 (86.7) | |
| LRTD | 41 (70.7) | 498 (54.8) | .02 |
Abbreviations: ARI, acute respiratory infection; ICU, intensive care unit; LRTD, lower respiratory tract disease; RSV, respiratory syncytial virus.