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Participants Included in Linear Regression Analyses, by Ethnic Group
| Ethnic group | Total no. of participants | No. (%) of participants with positive responses to any HIV-1peptide pool | No. (%) of participants with positive Gag-specific responses |
| White | 318 | 283 (89.0) | 265 (83.3) |
| Black | 87 | 72 (87.8) | 59 (73.0) |
| Mestizoa | 115 | 101 (82.8) | 84 (67.8) |
NOTE. a Mestizo (“mixed race”) is used by Peruvians to describe their ethnic group.
