Bivariate | Multivariate | Bivariate | Multivariate | Bivariate | Multivariate | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
UAI | STI rectal or syphilis | HIV | ||||||||||
OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | |
Age group | ||||||||||||
<30 | 1.54*** | 1.18-1.96 | 1.67*** | 1.26-2.23 | 1.78** | 1.12-2.86 | 1.06 | 0.49-2.33 | ||||
30-44 (ref.) | 1 | 1 | 1 | |||||||||
>44 years | 1.11 | 0.86-1.43 | 0.87 | 0.49-1.54 | 1.27 | 0.58-2.80 | ||||||
Partner number | ||||||||||||
0-2 (ref.) | 1 | 1 | 1 | |||||||||
3-5 | 1.15 | 0.80-1.64 | 2.71 | 0.76-9.66 | 1.41 | 0.48-4.14 | ||||||
6-10 | 1.18 | 0.83-1.70 | 6.10*** | 1.82-20.41 | 6.13*** | 1.79-20.9 | 0.82 | 0.25-2.72 | ||||
>10 | 1.59*** | 1.12-2.25 | 5.06*** | 1.51-16.91 | 5.27*** | 1.55-18.0 | 0.91 | 0.30-2.83 | ||||
Meeting sex partners | ||||||||||||
At friends | 1.20 | 0.93-1.47 | 1.31 | 0.85-2.02 | 0.47* | 0.21-1.06 | ||||||
In bars | 1.02 | 0.81-1.28 | 0.95 | 0.60-1.49 | 0.84 | 0.42-1.69 | ||||||
In gay bathhouses | 1.05 | 0.83-1.32 | 1.25 | 0.80-1.95 | 1.08 | 0.55-2.15 | ||||||
In porn cinemas | 1.07 | 0.81-1.42 | 1.11 | 0.65-1.89 | 1.83* | 0.90-3.71 | ||||||
In outside cruising sites | 1.02 | 0.71-1.47 | 0.66 | 0.28-1.53 | 1.10 | 0.39-3.13 | ||||||
On highway resting areas | 1.29 | 0.67-2.46 | 1.51 | 0.53-4.33 | 0.90 | 0.12-6.74 | ||||||
Online | 1.49*** | 1.20-1.84 | 1.29** | 1.01-1.65 | 1.45* | 0.93-2.26 | 0.81 | 0.44-1.52 | ||||
At parties or discotheques | 1.41*** | 1.12-1.78 | 0.94 | 0.60-1.48 | 0.61 | 0.29-1.29 | ||||||
In public urinals | 1.55 | 0.73-3.26 | 1.34 | 0.40-4.48 | 0.97 | 0.96-0.98 | ||||||
In fitness centres | 1.12 | 0.75-1.69 | 0.68 | 0.27-1.71 | 0.31 | 0.04-2.26 | ||||||
Substance use | ||||||||||||
Alcohol | 1.32*** | 1.07-1.62 | 0.82 | 0.54-1.24 | 0.63 | 0.34-1.17 | ||||||
Inhaled Amyl nitrite | 1.68*** | 1.31-2.15 | 1.63*** | 1.23-2.17 | 1.04 | 0.65-1.67 | 1.67 | 0.88-3.19 | ||||
Sildenafil | 1.53* | 0.96-2.43 | 1.22 | 0.55-2.72 | 1.20 | 0.36-3.95 | ||||||
Cocaine, Speed | 1.65* | 0.93-2.91 | 2.36** | 1.09-5.15 | 1.21 | 0.28-5.12 | ||||||
Cannabis | 1.50* | 0.97-2.30 | 1.23 | 0.58-2.62 | 1.04 | 0.32-3.42 | ||||||
Ecstasy | 3.54 | 0.78-16.03 | 4.23* | 1.15-15.65 | 5.77** | 1.40-23.8 | 2.83 | 0.36-22.32 | ||||
GBL,GHB | 0.61** | 0.58-0.63 | 4.67* | 0.93-23.44 | 4.88 | 0.59-40.56 | ||||||
Cofactors, behaviours | ||||||||||||
Unprotected anal intercourse | n.a. | 2.39*** | 1.46-3.93 | 2.42*** | 1.29-4.53 | 4.52*** | 1.76-11.59 | 3.24* ° | ||||
STI co-diagnosis | n.a. | n.a. | 3.02** | 1.22-7.46 | 4.52*** | 1.68-12.1 | ||||||
Having sex with partners who appear healthy | n.a. | 3.09*** | 1.94-4.92 | 2.92*** | 1.68-5.07 | 1.27 | 0.56-2.91 | |||||
Asking the insertive partner not to ejaculate inside | n.a. | 2.11** | 1.16-3.86 | 4.34*** | 2.11-8.89 | 4.44*** | 1.75-11.3 | |||||
Asking the partner about HIV status | n.a. | 1.71** | 1.03-2.85 | 2.03* | 1.00-4.11 | |||||||
Partner reluctant to use condoms | n.a. | 1.30 | 0.72-2.34 | 2.68** | 1.32-5.45 | |||||||
No condom available | n.a. | 2.81** | 1.46-5.41 | 3.10** | 1.26-7.60 |