Respondent and contact characteristics predictive of discussions relating to sex
| Talked about sex | Discussed HIV prevention | Received sexually transmitted infection (STI) advice | Received partner advice | |
| Model A | ||||
| Older generation relative | 1.00 | 1.00 | 1.00 | 1.00 |
| Same-generation relative | 2.37 (1.24 to 4.54) | 1.77 (0.96 to 3.27) | 1.62 (0.83 to 3.17) | 1.19 (0.40 to 3.54) |
| Romantic partner | 115 (26.8 to 501) | 20.0 (7.20 to 55.4) | 10.0 (3.85 to 26.1) | 4.29 (0.71 to 26.1) |
| Non-romantic non-relative | 5.69 (2.76 to 11.7) | 4.13 (2.07 to 8.23) | 3.34 (1.62 to 6.87) | 2.61 (0.91 to 7.43) |
| Respondent aged 25–34 vs 18–24 | 1.54 (0.84 to 2.83) | 2.22 (1.25 to 3.96) | 2.59 (1.36 to 4.94) | 1.22 (0.48 to 3.08) |
| Other vs same-gender contact | 0.36 (0.18 to 0.71) | 0.30 (0.16 to 0.57) | 0.30 (0.15 to 0.62) | 0.13 (0.03 to 0.60) |
| Female vs male respondent | 0.65 (0.35 to 1.19) | 0.86 (0.49 to 1.51) | 0.78 (0.41 to 1.46) | 0.55 (0.22 to 1.38) |
| N | 383 | 383 | 381 | 373 |
| Intraclass correlation coefficient | 0.170 | 0.132 | 0.233 | 0.343 |
| Model B | ||||
| Main effect | ||||
| Older generation relative | 1.00 | 1.00 | 1.00 | 1.00 |
| Same-generation relative | 2.21 (0.91 to 5.34) | 1.54 (0.67 to 3.56) | 1.30 (0.51 to 3.32) | 1.37 (0.26 to 7.21) |
| Romantic partner | 42.0 (9.08 to 194) | 10.81 (3.16 to 37.0) | 7.97 (2.26 to 28.1) | 11.95 (1.39 to 102) |
| Non-romantic non-relative | 6.25 (2.66 to 14.7) | 5.23 (2.31 to 11.8) | 3.84 (1.63 to 9.08) | 4.53 (1.08 to 19.0) |
| Respondent aged 25–34 vs 18–24 | ||||
| Older generation relative | 1.37 (0.52 to 3.63) | 2.14 (0.87 to 5.28) | 2.44 (0.89 to 6.71) | 2.82 (0.55 to 14.6) |
| Same-generation relative | 1.21 (0.33 to 4.43) | 1.33 (0.38 to 4.62) | 1.52 (0.40 to 5.80) | 0.68 (0.08 to 5.80) |
| Romantic partner | 4.77 (0.61 to 37.0) | 1.60 (0.30 to 8.44) | 0.09 (0.00 to 1.89) | |
| Non-romantic non-relative | 0.72 (0.17 to 2.98) | 0.39 (0.10 to 1.57) | 0.54 (0.13 to 2.26) | 0.27 (0.03 to 2.08) |
| Other vs same-gender contact | 0.35 (0.17 to 0.69) | 0.28 (0.15 to 0.54) | 0.29 (0.14 to 0.60) | 0.13 (0.03 to 0.60) |
| Female vs male respondent | 0.63 (0.34 to 1.18) | 0.84 (0.47 to 1.51) | 0.78 (0.41 to 1.46) | 0.53 (0.21 to 1.37) |
| N | 351 | 383 | 381 | 373 |
| Intraclass correlation coefficient | 0.192 | 0.154 | 0.237 | 0.349 |
Values are from two-level hierarchical logistic regressions containing varying numbers of contacts nested within 118 respondents. All models exclude five 'younger generation relative' and two 'unspecified relative' contacts, four contacts who declined to answer all these questions and one respondent with no contacts. Models for receipt of STI and partner advice have additional missing observations for question-specific non-response. Each regression for Model B contains main effects and age interaction effects for each type of relative. Model B for ‘talked about sex’ dropped observations for romantic partners of 25–34 year olds since all 32 had discussed sex with the respondent.