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Table 3 Sexual behaviour of MSM respondents in the Internet-based cross-sectional study.

From: Self-reported sexually transmitted infections and their correlates among men who have sex with men in Norway: an Internet-based cross-sectional survey

Sexual behaviour respondents
N = 2430
(%)
Chlamydi
a*
N= 101
(%)
Crude PR
Chlamydia
[95% CI]
gonorrhoea
N = 35 (%)
Crude PR
gonorrhoea
[95% CI]
HIV
N = 42 (%)
Crude PR
HIV
[95% CI]
Syphilis
N = 17 (%)
Crude PR
syphilis
[95% CI]
sexual orientation          
homosexual 2088 (85.9) 89 (88.1) ref. group 30 (85.7) ref. group 37 (88.1) ref. group 15 (88.2) ref. group
bisexual 225 (9.3) 8 (7.9) 0.8 [0.4-1.7] 4 (11.4) 1.2 [0.4-3.5] 3 (7.1) 0.7 [0.2-2.4] 1 (5.9) 0.6 [0.1-4.7]
heterosexual 77 (3.2) 3 (3.0) 0.9 [0.3-2.8] 1 (2.9) 0.9 [0.1-6.5] 2 (4.8) 1.5 [0.4-6.0] 1 (5.9) 1.8 [0.2-13.5]
unsure 40 (1.6) 1 (1.0) 0.6 [0.1-4.1] 0   0   0  
N of male sexual partners in life          
1 68 (2.8) 0   1 (2.9) ref. group 1 (2.4) ref. group 1 (5.9) ref. group
2-5 334 (13.7) 3 (3.0) ref. group 0   0   0  
6-10 383 (15.8) 6 (5.9) 1.7 [0.4-6.9] 3 (8.6) 0.5 [0.1-5.0] 1 (2.4) 0.2 [0.0-2.8] 0  
11-50 868 (35.7) 40 (39.6) 5.1 [1.6-16.5] 11 (31.4) 0.9 [0.1-6.6] 9 (21.4) 0.7 [0.1-5.5] 5 (29.4) 0.4 [0.0-3.3]
51- > 500 777 (32.0) 52 (51.5) 7.4 [2.3-23.7] 20 (57.1) 1.7 [0.2-12.8] 31 (73.8) 2.7 [0.4-19.6] 11 (64.7) 1.0 [0.1-7.3]
N of male sexual partners in the past 6 months          
0 175 (7.2) 2 (2.0) ref. group 0   3 (7.1) ref. group 0  
1-2 978 (40.2) 21 (20.8) 1.9 [0.4-8.1] 6 (17.1) ref. group 12 (28.6) 0.7 [0.2-2.5] 5 (29.4) ref. group
3-5 649 (26.7) 29 (28.7) 4.0 [1.0-16.5] 9 (25.7) 2.3 [0.8-6.3] 9 (21.4) 0.8 [0.2-3.0] 4 (23.5) 1.2 [0.3-4.5]
6-10 383 (15.8) 24 (23.8) 5.6 [1.3-23.3] 11 (31.4) 4.7 [1.7-12.6] 6 (14.3) 0.9 [0.2-3.7] 3 (17.6) 1.5 [0.4-6.4]
> 10 242 (10.0) 25 (24.8) 9.2 [2.2-38.3] 9 (25.7) 6.1 [2.2-16.9] 12 (28.6) 2.9 [0.8-10.3] 5 (29.4) 4.4 [1.2-13.8]
unknown 3 (0.1) 0   0   0   0  
anony mous/casual partner in the last 6 months          
no 853 (35.1) 20 (19.8) ref. group 6 (17.1) ref. group 12 (28.6) ref. group 1 (5.9) ref. group
yes 1572 (64.7) 81 (80.2) 2.2 [1.3-3.6] 29 (82.9) 2.6 [1.1-6.3] 30 (71.4) 1.3 [0.7-2.6] 16 (94.1) 8.7 [1.1-65.3]
unknown 5 (0.2) 0   0   0   0  
UAI** with anonymous/casual partner in the last
6 months
         
no 1848 (76.0) 52 (51.5) ref. group 19 (54.3) ref. group 24 (57.1) ref. group 10 (58.8) ref. group
yes 576 (23.7) 49 (48.5) 3.0 [2.1-4.4] 16 (45.7) 2.7 [1.4-5.2] 18 (42.9) 2.4 [1.3-4.4] 7 (41.2) 2.2 [0.9-5.9]
unknown 6 (0.2) 0   0   0   0  
practice of threesome or group sex          
no 1270 (52.3) 32 (31.7) ref. group 14 (40.0) ref. group 13 (30.9) ref. group 7 (41.2) ref. group
yes 1068 (43.9) 66 (65.3) 2.4 [1.6-3.7] 21 (60.0) 1.8 [0.9-3.5] 27 (64.3) 2.5 [1.3-4.8] 9 (52.9) 1.6 [0.6-4.1]
unknown 92 (3.8) 3 (3.0) 1.3 [0.4-4.1] 0   2 (4.8) 2.1 [0.5-9.3] 1 (5.9) 2.0 [0.2-15.9]
received money for sex in the last year          
no 2343 (96.4) 93 (92.1) ref. group 29 (82.9) ref. group 40 (95.2) ref. group 16 (94.1) ref. group
yes 78 (3.2) 7 (6.9) 2.3 [1.1-4.7] 6 (17.1) 6.2 [2.7-14.5] 2 (4.8) 1.5 [0.4-6.1] 1 (5.9) 1.9 [0.2-14.0]
unknown 9 (0.4) 1 (1.0) 2.8 [0.4-17.9] 0   0   0  
paid for sex in the last year          
no 2305 (94.9) 90 (89.1) ref. group 29 (82.9) ref. group 39 (92.9) ref. group 16 (94.1) ref. group
yes 118 (4.9) 11 (10.9) 2.4 [1.3-4.3] 5 (14.3) 3.4 [1.3-8.5] 3 (7.1) 1.5 [0.5-4.8] 1 (5.9) 1.2 [0.2-9.1]
unknown 7 (0.3) 0   1 (2.9) 11.3 [1.8-72.2] 0   0  
how many times feeling drunk in a given month          
< 1 487 (20.0) 8 (7.9) ref. group 2 (5.7) ref. group 10 (23.8) ref. group 4 (23.5) ref. group
1 416 (17.1) 14 (13.9) 2.0 [0.9-4.8] 9 (25.7) 5.3 [1.1-24.2] 12 (28.6) 1.4 [0.6-3.2] 4 (23.5) 1.2 [0.3-4.6]
2-3 588 (24.2) 27 (26.7) 2.8 [1.3-6.1] 12 (34.3) 5.0 [1.1-22.1] 12 (28.6) 1.0 [0.4-2.3] 3 (17.6) 0.6 [0.1-2.8]
≥ 4 923 (38.0) 52 (51.5) 3.4 [1.6-7.2] 12 (34.3) 3.2 [0.7-14.1] 8 (19.0) 0.4 [0.2-1.1] 5 (29.4) 0.6 [0.2-2.4]
unknown 16 (0.7) 0   0   0   1 (5.9) 7.6 [0.9-64.3]
unsafe sex under the influence of alcohol in the
past 12 months
         
no 1729 (71.1) 49 (48.5) ref. group 18 (51.4) ref. group 27 (64.3) ref. group 11 (64.7) ref. group
yes 641 (26.4) 51 (50.5) 2.8 [1.9-4.1] 17 (48.6) 2.5 [1.3-4.9] 15 (35.7) 1.5 [0.8-2.8] 6 (35.3) 1.5 [0.5-4.0]
unknown 60 (2.5) 1 (1.0) 0.6 [0.1-4.2] 0   0   0  
under the influence of selected drugs*** during sex in the
past 12 months
         
no 2106 (86.7) 81 (83.2) ref. group 25 (71.4) ref. group 25 (59.5) ref. group 14 (82.3) ref. group
yes 240 (9.9) 17 (16.8) 1.8 [1.1-3.0] 10 (28.6) 3.6 [1.8-7.5] 16 (38.1) 5.6 [3.0-10.4] 3 (17.6) 1.9 [0.5-6.5]
unknown 84 (3.5) 3 (3.0) 0.9 [0.3-2.9] 0   1 (2.4) 1.0 [0.1-7.3] 0  
current steady relationship with a woman          
no 2113 (86.9) 89 (88.1) ref. group 28 (80.0) ref. group 36 (85.7) ref. group 13 (76.5) ref. group
yes 236 (9.7) 10 (9.9) 1.0 [0.5-1.9] 4 (11.4) 1.2 [0.4-3.6] 5 (11.9) 1.2 [0.5-3.1] 3 (17.6) 2.1 [0.6-7.2]
unknown 81 (3.3) 2 (2.0) 0.6 [0.1-2.3] 3 (8.6) 2.8 [0.9-9.0] 1 (2.4) 0.7 [0.1-5.2] 1(5.9) 2.0 [0.3-15.1]
current steady relationship with a man          
no 1492 (61.4) 65 (64.4) ref. group 19 (54.3) ref. group 26 (61.9) ref. group 8 (47.1) ref. group
yes 936 (38.5) 36 (35.6) 0.9 [0.6-1.3] 16 (46.7) 1.3 [0.7-2.6] 16 (38.1) 1.0 [0.5-1.8] 9 (52.9) 1.8 [0.7-4.6]
unknown 2 (0.1) 0   0   0   0  
ever had a date in reality with an Internet partner          
no 190 (7.8) 3 (3.0) ref. group 0 no variance 2 (4.8) ref. group 1 (5.9) ref. group
yes 2209 (90.9) 97 (96.0) 2.8 [0.9-8.7] 35 (100)   40 (95.2) 1.7 [0.4-7.1] 16 (94.1) 1.4 [0.2-10.3]
unknown 31 (1.3) 1 (1.0) 2.0 [0.2-19.0] 0   0   0  
  1. * only those, who reported Chlamydia as a single STI infection in the past 12 months, were included in this group
  2. **UAI - unprotected anal intercourse
  3. ***selected drugs included: marihuana, prescription drugs, ecstasy, LSD, GHB, cocaine, heroine, amphetamines, methamphetamines
  4. Proportion of MSM, reporting Chlamydia, gonorrhoea, HIV infection or syphilis in the previous 12 months and their crude associations