Table 1.
Characteristics of included influenza patients in the health-related quality of life survey, China, 2013 (n, %)
| Characteristics | Influenza outpatients (n = 529) |
Influenza inpatients (n = 249) |
Total (n = 778) |
|---|---|---|---|
| Median age, years (IQR) a | 8 (5–20) | 4 (2–7) | 7 (3–15) |
| Age group, years | |||
| < 5 | 122 (23.1%) | 141 (56.6%) | 263 (33.8%) |
| 5–15 | 246 (46.5%) | 80 (32.1%) | 326 (41.9%) |
| 16–59 | 146 (27.6%) | 24 (9.6%) | 170 (21.9%) |
| ≥ 60 | 15 (2.8%) | 4 (1.6%) | 19 (2.4%) |
| Male | 281 (53.1%) | 144 (57.8%) | 425 (54.6%) |
| Risk status b | |||
| Low-risk | 412 (77.9%) | 118 (47.4%) | 530 (68.1%) |
| High-risk | 117 (22.1%) | 131 (52.6%) | 248 (31.9%) |
| Area | |||
| Urban area | 438 (82.8%) | 166 (66.7%) | 604 (77.6%) |
| Rural area | 91 (17.2%) | 83 (33.3%) | 174 (22.4%) |
| Region | |||
| East China | 271 (51.2%) | 113 (45.4%) | 384 (49.4%) |
| Central China | 122 (23.1%) | 78 (31.3%) | 200 (25.7%) |
| West China | 136 (25.7%) | 58 (23.3%) | 194 (24.9%) |
| Hospital c | |||
| Level 3 | 298 (56.3%) | 177 (69.7%) | 475 (60.7%) |
| Level 2 | 119 (22.5%) | 58 (22.8%) | 177 (22.6%) |
| Level 1 and lower | 112 (21.2%) | 19 (7.5%) | 131 (16.7%) |
| Virus type | |||
| Untyped d | 307 (58.0%) | 183 (73.5%) | 490 (63.0%) |
| Influenza A | 164 (31.0%) | 30 (12.0%) | 194 (24.9%) |
| Influenza B | 58 (11.0%) | 36 (14.5%) | 94 (12.1%) |
a IQR: inter-quartile range
b Risk status: high risk patients refer to those with underlying medical conditions including: chronic respiratory disease, asthma, chronic cardiovascular diseases, diabetes, chronic liver disease, and chronic renal disease, etc. Other patients without these underlying diseases are low risk patients
c Level 3 is the top level, followed by level 2 and level 1 in order
d Untyped: Laboratory tests for influenza virus type identification were not conducted