TABLE 1.
Demographics of the study population at baseline
| Characteristic | Data by dose for: |
|||
|---|---|---|---|---|
| Seronegative population |
Seropositive population |
|||
| 30 μg | 60 μg | 30 μg | 60 μg | |
| n | 101 | 98 | 75 | 76 |
| Mean age (range) (yr) | 40.5 (18–69) | 43.0 (20–70) | 48.8 (19–69) | 46.9 (20–70) |
| Gender (no. [%]) | ||||
| Male | 48 (47.5) | 53 (54.1) | 41 (54.7) | 51 (67.1) |
| Female | 53 (52.5) | 45 (45.9) | 34 (45.3) | 25 (32.9) |
| Race (no. [%]) | ||||
| White | 101 (100.0) | 98 (100.0) | 75 (100.0) | 74 (97.4) |
| Black or African-American | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (2.6) |
| Ethnicity (no. [%]) | ||||
| Hispanic or Latino | 1 (1.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Not Hispanic or Latino | 100 (99.0) | 98 (100.0) | 75 (100.0) | 76 (100.0) |
| Mean wt (range) (kg) | 73.5 (47–115) | 74.1 (48–102) | 76.2 (50–113) | 78.5 (51–115) |
| Mean ht (range) (cm) | 172 (136–196) | 173 (150–193) | 174 (152–194) | 175 (156–195) |
| Mean body mass index (range) (kg/m2) | 24.6 (18.5–34.5) | 24.7 (18.3–31.8) | 24.9 (18.4–34.0) | 25.5 (18.6–33.9) |
| Previous symptomatic infection (no. [%]) | NAa | NA | 30 (40.0) | 44 (57.9) |
| Previous asymptomatic infection (no. [%]) | NA | NA | 45 (60.0) | 32 (42.1) |
a
NA, not applicable.