Table 1. Demographic and baseline characteristics.
| Enrolled Subjects a | |||
|---|---|---|---|
| Age 18–60 y | Age ≥61 y | Total | |
| n = 63 | n = 63 | n = 126 | |
| Age (years, SD) | 37.4 ± 11.4 | 68.0 ± 4.7 | 52.7 ± 17.7 |
| Sex | |||
| Male n (%) | 30 (48) | 32 (51) | 62 (49) |
| Female n (%) | 33 (52) | 31 (49) | 64 (51) |
| Weight (kg, SD) | 78.44 ± 14.97 | 76.35 ± 13.63 | 77.40 ± 14.30 |
| Height (cm, SD) | 173.3 ± 10.6 | 173.3 ± 9.2 | 173.3 ± 9.9 |
| BMI (kg/m2, SD) | 26.0 ± 4.0 | 25.3 ± 3.1 | 25.7 ± 3.6 |
| Previous seasonal influenza vaccination | |||
| No n (%) | 43 (68) | 30 (48) | 73 (58) |
| Yes n (%) | 20 (32) | 33 (52) | 53 (42) |
| Ethnicity | |||
| White n (%) | 62 (98) | 63 (100) | 125 (99) |
| Native Hawaiian or other Pacific Islander n (%) |
1 (2) | 0 | 1 (<1) |
aAll subjects who were enrolled in the study (i.e., attended the first clinical visit).