Table 1:
Descriptive analysis for the 838 male blood donors from four large Brazilian blood centers from 2009 to 2011.
| Characteristics | Valid n (n = 838) | Frequency n (%) |
|---|---|---|
| Donor’s Characteristics | ||
| Age (years) | 838 | 33.6 ± 9.9 |
| Educational level | 833 | |
| Illiterate / Inc. Elementary School/Adult Literacy | 86 (10.3) | |
| Complete Elementary/High/Technician School | 596 (71.5) | |
| Graduation/MD/PhD | 151 (18.1) | |
| Marital status | 838 | |
| Married / living with | 433 (51.7) | |
| Unmarried | 405 (48.3) | |
| Sexual History | 812 | |
| Heterosexual | 618 (76.1) | |
| MSM/Bisexual | 194 (23.9) | |
| Lifetime Number of partners | 838 | |
| 0 – 1 | 243 (29.0) | |
| 2 – 5 | 250 (29.8) | |
| ≥ 6 | 345 (41.2) | |
| Center ID | 838 | |
| Fundação Pró-Sangue – São Paulo | 242 (28.9) | |
| Hemominas – Minas Gerais | 159 (19.0) | |
| Hemope – Pernambuco | 175 (20.9) | |
| Hemorio – Rio de Janeiro | 262 (31.3) | |
| Characteristics of the last five partners* | ||
| Partner’s age | ||
| Age disparity of ≥10 years for one or more partners | 799 | 78 (9.8) |
| Type of partner | ||
| Main partner | 799 | 599 (75.0) |
| Friend partner | 799 | 133 (16.6) |
| Acquaintance partner | 799 | 132 (16.5) |
| One time partner | 799 | 102 (12.8) |
| Anonymous partner | 799 | 82 (10.3) |
| Sex worker partner | 799 | 15 (1.9) |
| Anonymous or sex worker partner | 799 | 93 (11.6) |
| Intravenous drug use (IVDU)† | ||
| IVDU or partner IVDU | 799 | 31 (3.9) |
| Partner’s MSM | ||
| Yes | 799 | 104 (13.0) |
| Partner’s HIV Status | ||
| Don’t know partner’s HIV status | 799 | 286 (35.8) |
| HIV positive partner | 799 | 32 (4.0) |
| Venue where met their partners | ||
| Bar or Carnival | 799 | 160 (20.0) |
| Street, park, library, public transportation | 799 | 144 (18.0) |
| Social/political parties in clubs or church | 799 | 239 (29.9) |
| Dating service (internet/newspaper ads) | 799 | 87 (10.9) |
| Some other way or work | 799 | 374 (46.8) |
| Unprotected sexual intercourse | ||
| Unprotected vaginal sex | 799 | 533 (66.7) |
| Unprotected heterosexual anal sex | 797 | 217 (27.2) |
*
Partner’s characteristics were based on the criteria of having at least one partner with such characteristic
†
IVDU was defined as lifetime intravenous drug users or lifetime sexual partners of intravenous drug users