Table 1.
Baseline Characteristics of Each Enrolled Group
| Tissue | Fresh semena | |
|---|---|---|
| Participants enrolled | 29 | 25 |
| Mean age in years (SD) | 43.9 (10) | 40.2 (11.6) |
| Gender, n (%) | ||
| Male | 20 (69) | 25 (100) |
| Female | 9 (31) | |
| Race, n (%) | ||
| Hispanic origin or Latino | 4 (14) | 1 (4) |
| Caucasian | 7 (24) | 8 (33) |
| Asian | 0 (0) | 8 (33) |
| African American | 17 (59) | 6 (24) |
| Other or unknown | 1 (3) | 2 (8) |
HIV-seronegative participants contributed freshly acquired semen (n = 25 men, mean age 43.9 years) and colonic tissue biopsies during sigmoidoscopy (n = 29 men and women, mean 40.2 years). The men who contributed biopsies were different than men who donated semen.
a
Purchased pooled frozen semen not included.