TABLE 1 .
Demographic characteristics of participants (total population and populations categorized by study arm)
| Characteristic | Summer |
Winter |
All |
|||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| All participants | 1,477 | 1,208 | 2,685 | |||
| Gender | ||||||
| Female | 847 | (57.4) | 702 | (58.1) | 1,549 | (57.7) |
| Male | 617 | (41.8) | 502 | (41.6) | 1,119 | (41.7) |
| Transgender | 5 | (0.3) | 1 | (0.1) | 6 | (0.2) |
| Gender nonconforming | 6 | (0.4) | 2 | (0.2) | 8 | (0.3) |
| Do not know | 2 | (0.1) | 1 | (0.1) | 3 | (0.1) |
| Race | ||||||
| White | 1,000 | (67.7) | 865 | (71.6) | 1,865 | (69.5) |
| Black/African American | 53 | (3.6) | 40 | (3.3) | 93 | (3.5) |
| Asian | 219 | (14.8) | 136 | (11.3) | 355 | (13.2) |
| American Indian/Alaska Native | 22 | (1.5) | 19 | (1.6) | 41 | (1.5) |
| Native Hawaiian/Pacific Islander | 5 | (0.3) | 11 | (0.9) | 16 | (0.6) |
| Other or two or more races | 87 | (5.8) | 95 | (7.9) | 182 | (6.8) |
| Hispanic | ||||||
| No | 1,140 | (77.2) | 948 | (78.5) | 2,088 | (77.8) |
| Yes | 329 | (22.3) | 255 | (21.1) | 584 | (21.7) |
| Age (yrs) | ||||||
| 18–29 | 568 | (38.5) | 486 | (40.2) | 1,054 | (39.8) |
| 30–39 | 309 | (20.9) | 252 | (20.9) | 561 | (20.9) |
| 40–49 | 301 | (20.4) | 290 | (24.0) | 591 | (22.0) |
| 50–64 | 206 | (13.9) | 117 | (9.6) | 323 | (12.0) |
| 65 or older | 67 | (4.5) | 47 | (3.8) | 112 | (4.2) |
| Flu shot in 2015–2016 season | ||||||
| No | 791 | (53.6) | 604 | (50.0) | 1,395 | (52.0) |
| Yes | 611 | (41.4) | 522 | (44.1) | 1,144 | (42.6) |
| Do not know | 58 | (3.9) | 69 | (5.8) | 146 | (5.4) |
| Response to “I get sick more easily or more often than most people I know” | ||||||
| Strongly agree | 42 | (2.8) | 47 | (3.9) | 89 | (3.4) |
| Somewhat agree | 160 | (10.8) | 142 | (11.8) | 302 | (11.3) |
| Neither agree nor disagree | 178 | (12.1) | 180 | (15.0) | 358 | (13.5) |
| Somewhat agree | 341 | (23.1) | 271 | (22.7) | 612 | (23.0) |
| Strongly disagree | 741 | (50.2) | 554 | (46.4) | 1,295 | (48.8) |