Table 2 Characteristics of all participants, and participants with at least two reports included in the study
From: Incidence and risk factors for influenza-like-illness in the UK: online surveillance using Flusurvey
All registered participants | Participants with 2 or more symptoms surveys | ||||||
|---|---|---|---|---|---|---|---|
Age group | Participants | Participants (% of all participants) | Percent of Flusurvey sample | Percent of UK population | Female n (%) | Risk factor n (%) | Vaccine n (%) |
0-17 | 403 | 274 (68.0) | 6.2 | 21.0 | 136 (49.6) | 30 (10.9) | 24 (8.8) |
18-24 | 382 | 202 (52.9) | 4.6 | 9.4 | 142 (70.3) | 30 (14.9) | 25 (12.4) |
25-34 | 1132 | 774 (68.4) | 17.5 | 13.6 | 557 (72.0) | 100 (12.9) | 153 (19.8) |
35-44 | 1281 | 903 (70.5) | 20.4 | 13.5 | 611 (67.7) | 138 (15.3) | 204 ( 22.6) |
45-64 | 2138 | 1778 (83.2) | 40.1 | 25.4 | 1150 (64.7) | 326 (18.3) | 583 (32.8) |
65+ | 607 | 501 (82.5) | 11.3 | 17.1 | 288 (57.5) | 183 (36.5) | 450 (89.8) |
% of total included in our study | Â | Â | Â | 75.9% | 79.1% | 84.4% | |