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Table 1 Characteristics of included influenza patients in the health-related quality of life survey, China, 2013 (n, %)

From: The impact of influenza on the health related quality of life in China: an EQ-5D survey

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%)

  1. a IQR: inter-quartile range
  2. 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
  3. c Level 3 is the top level, followed by level 2 and level 1 in order
  4. d Untyped: Laboratory tests for influenza virus type identification were not conducted