Event-Specific Risk Factors Predicting Episodes of Unprotected Anal Intercourse with Male Nonregular Partners among Men Who Have Sex with Men Using Case-Crossover Study Design
Table 5
Factors associated with UAI involving male NRP.
Episode involving condom use
Episode involving no condom use
Matched OR
Row %
Row %
Sociodemographic characteristics
Age (years)
≤25
43.2
56.8
1
26–35
51.9
48.1
0.52 (0.28–0.97)*
36–45
46.7
53.3
0.66 (0.26–1.72)
>46
47.6
52.4
0.93 (0.13–6.50)
Do not know
61.0
39.0
0.29 (0.12–0.70)**
Sexual experiences
Times of anal sex with the sex partner before
0 times
48.1
51.9
1
1-2 times
48.9
51.1
1.02 (0.49–2.12)
≥3 times
64.4
35.6
0.28 (0.10–0.75)*
Did your sex partner have equal sex experience as you?
About the same/do not know
44.9
55.1
1
More experience/less experience
55.7
44.3
0.47 (0.27–0.79)**
Style of the partner
Physical appearance of sex partner
Neutral
46.1
53.9
1
Masculine
50.5
49.5
0.67 (0.38–1.20)
Feminine
62.5
37.5
0.16 (0.04–0.57)**
Personality of sex partner
Passive
60.5
39.5
1
Assertive
50.7
49.3
2.18 (1.07–4.45)*
Neutral
42.7
57.3
4.30 (1.81–10.17)***
Do not know
40.0
60.0
4.48 (0.35–57.46)
Liking & relationship
How much did the sex partner like you?
1–3
30.8
69.2
1
4–6
41.1
58.9
0.60 (0.14–2.69)
≥7
55.5
44.5
0.19 (0.04–0.81)*
Do not know
45.2
54.8
0.76 (0.17–3.47)
Spirit prior to the episode of anal sex
Tiredness before the episode
Very energetic/energetic/normal
51.7
48.3
1
A bit tired/very tired
36.1
63.9
2.73 (1.07–7.00)*
Do not know/cannot remember
40.0
60.0
1.61 (0.57–4.56)
Were you (the participant) nervous prior to the sex episode?
Not at all
54.3
45.7
1
Not really
51.9
48.1
1.33 (0.75–2.33)
A bit/very
34.8
65.2
3.32 (1.57–7.06)**
Do not know
46.2
53.8
1.61 (0.47–5.57)
Risk assessments
One week before intercourse, did you have UAI with any other male partner?
No
48.0
52.0
1
Yes
59.2
40.8
0.39 (0.18–0.85)*
How likely did you think he would be to use condoms with other male sex partners?
Very likely/moderate/no other partners
53.8
46.2
1
Not likely/never
45.4
54.6
2.29 (1.22–4.28)*
Communication & planning about condom use
Did you discuss condom use with partner before UAI?
No
44.4
55.6
1
Yes
63.5
36.5
0.29 (0.16–0.53)***
Did you perceive that the sex partner would like to use a condom?
No
36.9
63.1
1
Yes
76.2
23.8
0.11 (0.05–0.21)***
Did your sex partner suggest using a condom?
No
44.1
55.9
1
Yes
67.6
32.4
0.30 (0.17–0.52)***
Did your sex partner suggest NOT using a condom?
No
49.0
51.0
1
Yes
35.0
65.0
4.00 (1.84–8.68)***
Did you plan to use a condom?
No
28.7
71.3
1
Yes
59.9
40.1
0.16 (0.08–0.30)***
Did you suggest using a condom?
No
41.3
58.7
1
Yes
68.6
31.4
0.19 (0.10–0.35)***
Did you suggest NOT using a condom?
No
52.5
47.5
1
Yes
29.8
70.2
2.90 (1.41–5.95)**
Timing & location
Happen during weekend?
Weekend
58.9
41.1
1
Weekday
44.3
55.7
2.50 (1.49–4.20)***
Availability of condoms
Were condoms already available at the venue?
No
38.2
61.8
1
Yes
53.7
46.3
0.40 (0.22–0.71)**
Were there any notices (e.g., posters) promoting condom use at the venue then? #
