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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