Table 1.
Summary of Demographic Characteristics by Subject (Total Cohort: N = 553 Subjects With Moderate-to-Severe Influenza-like Illness With Samples Collected)
| Characteristic | Category | All Subjects | Subjects Hospitalizeda | Subjects With Pneumoniaa | Subjects With ISS Score >2a |
|---|---|---|---|---|---|
| No. of subjects (N) | N = 553 | N = 62 | N = 28 | N = 490 | |
| Age, years | Mean (SD) | 72.8 (5.5) | 74.3 (5.8) | 71.9 (5.4) | 72.7 (5.5) |
| Range | 65.0–93.0 | 65.0–88.0 | 65.0–87.0 | 65.0–93.0 | |
| Age group, n (%)b | 65–69 | 178 (32.2) | 14 (22.6) | 11 (39.3) | 160 (32.7) |
| 70–74 | 181 (32.7) | 21 (33.9) | 9 (32.1) | 163 (33.3) | |
| 75–79 | 124 (22.4) | 15 (24.2) | 5 (17.9) | 109 (22.2) | |
| 80+ | 70 (12.7) | 12 (19.4) | 3 (10.7) | 58 (11.8) | |
| Gender ratio | Women/Men | 1.8 | 1.4 | 1.5 | 1.8 |
| Life independence status, n (%)c | Independent | 507 (91.7) | 52 (83.9) | 27 (96.4) | 453 (92.4) |
| Low-level care | 18 (3.3) | 0 (0.0) | 0 (0.0) | 18 (3.7) | |
| High level care | 28 (5.1) | 10 (16.1) | 1 (3.6) | 19 (3.9) |
Abbreviations: ISS, influenza symptom severity score; SD, standard deviation.
a One subject may belong to >1 category.
b n (%), no. (percentage) of subjects in a given category.
c Low-level care: care with living arrangement provisions that cater for having chronic limitations. High-level care: provides more intense supervision, intermittent services, and nursing care for those who require high support