From: Demographic determinants of syphilis seroprevalence among U.S. blood donors, 2011–2012
Variable | Number of donors (n = 798,761) | (%) |
---|---|---|
Sex | ||
Male | 404,956 | (51) |
Female | 393,798 | (49) |
Age | ||
16-19 | 161,244 | (20) |
20-29 | 164,829 | (21) |
30-39 | 114,473 | (14) |
40-49 | 118,913 | (15) |
50+ | 239,302 | (30) |
Race/Ethnicity | ||
Caucasian | 494,913 | (62) |
African American | 29,624 | (4) |
Hispanic | 148,201 | (19) |
Asian | 21,410 | (3) |
Native American | 9,756 | (1) |
Other | 22,091 | (3) |
Unknown | 72,766 | (9) |
Education | ||
< High school | 148,147 | (19) |
High school | 107,236 | (13) |
Some college | 267,519 | (33) |
Bachelors | 129,969 | (16) |
Masters/PhD | 59,859 | (7) |
Missing | 86,031 | (11) |
Country of birth | ||
USA | 662,390 | (83) |
Non-USA | 54,286 | (7) |
Missing | 82,085 | (10) |
Donation history | ||
First time | 202,323 | (25) |
Repeat | 596,438 | (75) |
Region of residence | ||
Northern | 293,493 | (39) |
Western | 239,619 | (32) |
Southern | 214,779 | (29) |
Syphilis status | ||
Seropositive | 436 | (0.05) |
Active | 55 | (0.007) |