Table 3.
Associations between post-traumatic stress symptom score (PC-PTSD-5 ≥ 3 versus PC-PTSD-5 < 3) and sexual behaviour, PrEP attitudes and mental health co-morbidities
| Outcome variable and categoriesa | Crude results | Adjusted for study setting, sex and age group | Further adjusted for depression and anxiety | |||
|---|---|---|---|---|---|---|
| ORb (95% CI) | p-value | ORb (95% CI) | p-value | ORb (95% CI) | p-value | |
| Sexual behaviour characteristics | ||||||
| Number partners, last 6 months (0, 1, 2, 3+) | 1.15 (1.08, 1.23) | < 0.001 | 1.08 (1.01, 1.16) | 0.02 | 1.08 (1.01, 1.16) | 0.03 |
| Sex frequency, past month (never, weekly-monthly, >weekly) | 1.14 (1.06, 1.22) | < 0.001 | 1.04 (0.96, 1.12) | 0.32 | 1.03 (0.96, 1.11) | 0.41 |
| Last time had sex, how far in advance knew (> 24 h, 12–23 h, 2–12 h, < 2 h) | 1.04 (0.97, 1.12) | 0.27 | 1.02 (0.95, 1.10) | 0.55 | 1.02 (0.95, 1.10) | 0.55 |
| Condom use last sex with recent partner (no, yes) | 0.94 (0.87, 1.02) | 0.14 | 0.93 (0.85, 1.01) | 0.09 | 0.95 (0.87, 1.03) | 0.23 |
| Type of relationship, most recent partner (regular, casual/paying/other) | 1.11 (1.00, 1.22) | 0.04 | 1.15 (1.03, 1.28) | 0.01 | 1.14 (1.02, 1.27) | 0.02 |
| HIV status, most recent partner (negative, positive/don’t know) | 1.07 (0.98, 1.15) | 0.12 | 1.09 (1.00, 1.18) | 0.05 | 1.09 (1.00, 1.19) | 0.05 |
| General risk taking and HIV salience characteristics | ||||||
| Self-perception of frequency of risk-taking (never, sometimes, often) | 1.16 (1.09, 1.25) | < 0.001 | 1.13 (1.05, 1.21) | 0.001 | 1.12 (1.04, 1.20) | 0.004 |
| Thought about risk of HIV, last 3 months (never, rarely, sometimes, often) | 1.23 (1.15, 1.31) | < 0.001 | 1.18 (1.10, 1.27) | < 0.001 | 1.16 (1.08, 1.25) | < 0.001 |
| Chance of HIV, next 3 months (none, some, moderate/high) | 1.16 (1.08, 1.24) | < 0.001 | 1.10 (1.03, 1.19) | 0.01 | 1.09 (1.01, 1.17) | 0.02 |
| Attitudes towards PrEP | ||||||
| PrEP preference (on demand, daily) | 1.09 (1.01, 1.18) | 0.02 | 1.04 (0.96, 1.13) | 0.32 | 1.04 (0.96, 1.13) | 0.36 |
| Would take PrEP if same price as hot meal (no, yes) | 1.08 (0.99, 1.17) | 0.07 | 1.06 (0.97, 1.15) | 0.18 | 1.07 (0.99, 1.17) | 0.10 |
| Would disclose PrEP to partner (no, yes) | 1.03 (0.95, 1.12) | 0.42 | 1.01 (0.93, 1.09) | 0.85 | 1.02 (0.94, 1.11) | 0.58 |
| Alcohol and drug use | ||||||
| Frequency of binge drinking (don’t drink; never, <monthly, ≥monthly) | 1.21 (1.14, 1.30) | < 0.001 | 1.14 (1.06, 1.23) | < 0.001 | 1.14 (1.06, 1.23) | 0.001 |
| Drug use, last 30 days (no, yes) | 1.14 (1.03, 1.26) | 0.01 | 1.08 (0.96, 1.22) | 0.19 | 1.06 (0.94, 1.19) | 0.34 |
aFor binary outcome variables, the reference group is listed first; for ordered categorical outcome variables, the categories are listed in order;
bOdds ratio represent the increase in odds for a one unit increase in PC-PTSD-5 score