TABLE 1.
Clinical and sociodemographic characteristics of enrolled participants from 16 October 2019 to 9 March 2020
| Characteristic | No. (%) of participantsa |
|---|---|
| Age (yrs) | |
| <5 | 128 (2.9) |
| 5–17 | 208 (4.8) |
| 18–49 | 3,212 (73.7) |
| 50–64 | 614 (14.1) |
| ≥65 | 192 (4.4) |
| Sex | |
| Male | 1,191 (27.3) |
| Female | 2,451 (56.2) |
| Other | 19 (0.4) |
| Race | |
| American Indian/Alaska Native | 17 (0.4) |
| Asian | 724 (16.6) |
| Native Hawaiian/Pacific Islander | 7 (0.2) |
| Black/African American | 37 (0.8) |
| White | 2,542 (58.3) |
| Other | 92 (2.1) |
| Multiple | 188 (4.3) |
| Hispanic ethnicity (n = 2,856) | 183 (4.2) |
| Income | |
| ≤$25,000 | 196 (4.5) |
| $25,000–50,000 | 367 (8.4) |
| $50,000–100,000 | 860 (19.7) |
| $100,000–150,000 | 738 (16.9) |
| ≥$150,000 | 1,160 (26.6) |
| Education level | |
| Graduated high school/obtained GED or less | 109 (2.5) |
| Some college (including vocational training, associate’s degree) | 492 (11.3) |
| Bachelor’s degree | 1,371 (31.5) |
| Advanced degree | 1,377 (31.6) |
| Care-seeking | |
| Any care prior to enrollment or during study period | 1,182 (27.1) |
| No care prior to enrollment or during study period | 2,183 (50.1) |
| Illness impact on regular activities at enrollment | |
| None | 243 (5.6) |
| Low | 1,597 (36.6) |
| High | 1,831 (42.0) |
| How participant heard about the study | |
| Saw an ad on Facebook/Instagram/Twitter | 1,369 (31.4) |
| Referral from a friend/family member | 841 (19.3) |
| Other online | 667 (15.3) |
| Saw an ad on Google | 314 (7.2) |
| Referral from my place of work | 280 (6.4) |
| Other | 172 (3.9) |
| Saw a Seattle Flu Study kiosk | 86 (2.0) |
| Email/Seattle Community Pulse | 86 (2.0) |
| Referral from a healthcare provider, travel clinic, or immigrant/refugee health screening | 60 (1.4) |
| Referral from my child’s school | 29 (0.7) |
a
Total n = 4,359.