Table 2.
Comparison of sociodemographic characteristics between participants in the cohort and those who declined to participate
| Participants | Declined to participate | p Value | |
|---|---|---|---|
| 2183 (70.3) | 923 (29.7) | ||
| Sexual identity, n (%) | <0.001 | ||
| Homosexual | 1831 (83.9) | 709 (78.3) | |
| Bisexual | 306 (14.0) | 151 (16.7) | |
| Heterosexual | 28 (1.3) | 37 (4.1) | |
| Other/did not know/rather not say | 17 (0.8) | 8 (0.9) | |
| Missing | 1 | 18 | |
| Age, median (P25-P75) | 29 (23–36) | 30 (24–38) | 0.074 |
| Country/region of origin, n (%) | <0.001 | ||
| Portugal | 1573 (75.7) | 539 (59.0) | |
| Brazil | 231 (11.1) | 160 (17.5) | |
| Other European country | 139 (6.7) | 141 (15.4) | |
| African country | 89 (4.3) | 27 (3.0) | |
| Other American country | 31 (1.5) | 30 (3.3) | |
| Asia/Middle East/Oceania | 9 (0.4) | 16 (1.8) | |
| Rather not say | 5 (0.2) | 1 (0.1) | |
| Missing | 106 | 9 | |
| Educational level, n (%) | <0.001 | ||
| Basic education or less | 78 (3.6) | 101 (11.3) | |
| Secondary education | 564 (25.9) | 288 (32.3) | |
| Professional training | 260 (11.9) | 36 (4.0) | |
| Bachelor | 896 (41.0) | 341 (38.2) | |
| Master or Doctoral | 373 (17.1) | 118 (13.2) | |
| Other/rather not say | 10 (0.5) | 9 (1.0) | |
| Missing | 2 | 30 | |
| Previous HIV testing, n (%) | 0.167 | ||
| Yes | 1650 (81.9) | 766 (83.8) | |
| No | 354 (17.6) | 145 (15.9) | |
| Did not know | 11 (0.5) | 2 (0.2) | |
| Rather not say | 0 (0.0) | 1 (0.1) | |
| Missing | 168 | 9 |