Table 1.

Characteristics (sex, age, and race) of healthy blood donors.

Sex	Number
Female	116
Male	184
Age* (years)	Number
18 - 24	41
25 - 64	253
≥ 65	5
Race	Number
Caucasian	18
Hispanic	134
Black	142
Asian	1
Unknown	5

^*The age of one male was not known.