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Table 1 Selected characteristics of HIV positive MSM who were diagnosed in Norway in 1995-2011, and factors associated with having been diagnosed in the years 2003-2011 compared to 1995-2002

From: Trends in HIV infection surveillance data among men who have sex with men in Norway, 1995-2011

Demographic, epidemiological and other possibly associated factors

Total sample

Diagnosed in the years 2003-2011

Diagnosed in the years 1995-2002

Comparison of diagnosed in the years 2003-2011 vs. diagnosed in 1995-2002

 

N=991 (%)

N= 713 (%)

N= 278 (%)

Crude PR* [95% CI]

Adjusted PR**

[95% CI]

p for trend

Age groups (years)

      

16-24

73 (7.4)

56 (7.8)

17 (6.1)

ref. group

ref. group

0.418

25-34

362 (36.5)

266 (37.3)

96 (34.5)

1.0 [0.8-1.1]

1.0 [0.9-1.1]

 

35-44

323 (32.6)

221 (31.0)

102 (36.7)

0.9 [0.8-1.0]

1.0 [0.8-1.1]

 

≥ 45

233 (23.5)

170 (23.8)

63 (22.7)

0.9 [0.8-1.1]

1.1 [1.0-1.3]

 

Place of birth

      

Norway

740 (74.7)

523 (73.3)

217 (78.1)

ref. group

ref. group

 

Africa

23 (2.3)

18 (2.5)

5 (1.8)

1.1 [0.9-1.4]

1.3 [1.0-1.6]

 

Asia

64 (6.5)

50 (7.0)

14 (5.0)

1.1 [1.0-1.3]

1.2 [1.0-1.4]

 

Europe, other

92 (9.3)

71 (10.0)

21 (7.6)

1.1 [1.0-1.2]

1.1 [1.0-1.3]

 

North America

13 (1.3)

11 (1.5)

2 (0.7)

1.2 [0.9-1.5]

1.2 [1.0-1.6]

NA

South/Mid America

59 (5.6)

40 (5.6)

19 (6.8)

0.9 [0.8-1.1]

1.0 [0.8-1.2]

 

Health region of residence in Norway

      

South-East***

842 (85.0)

602 (84.4)

240 (86.3)

ref. group

ref. group

NA

West

86 (8.7)

58 (8.1)

28 (10.1)

0.9 [0.8-1.1]

0.9 [0.8-1.2]

 

Mid-Norway

39 (4.0)

35 (4.9)

4 (1.4)

1.2 [1.1-1.4]

1.3 [1.1-1.5]

 

North

24 (2.4)

18 (2.5)

6 (2.2)

1.0 [0.8-1.3]

1.0 [0.8-1.3]

 

Year gap****

      

< 1 year

498 (50.2)

389 (54.6)

109 (39.2)

ref. group

ref. group

0.001

1-3 years

157 (15.8)

118 (16.5)

39 (14.0)

1.0 [0.9-1.1]

1.0 [0.8-1.1]

 

>3 years

84 (8.5)

41 (5.7)

43 (15.5)

0.6 [0.5-0.8]

0.6 [0.5-0.8]

 

Unknown

252 (25.4)

165 (23.1)

87 (31.3)

0.8 [0.8-0.9]

0.7 [0.6-0.9]

 

Reason for HIV test

      

Contact tracing

109 (11.0)

68 (9.5)

41 (14.8)

ref. group

ref. group

NA

Own request

328 (33.1)

261 (36.6)

67 (24.1)

1.3 [1.1-1.5]

1.3 [1.1-1.5]

 

Blood donor

1 (0.1)

0

1 (0.4)

excluded

excluded

 

Immigrant

11 (1.1)

7 (1.0)

4 (1.4)

1.0 [0.6-1.6]

1.0 [0.6-1.7]

 

Symptoms

347 (35.0)

249 (35.0)

98 (35.3)

1.1 [1.0-1.3]

1.2 [1.0-1.4]

 

Unspecified

195 (20.0)

128 (18.0)

67 (24.1)

1.1 [0.9-1.3]

1.1 [0.9-1.3]

 

Source partner

      

Steady

166 (16.7)

117 (16.4)

49 (17.6)

ref. group

ref. group

NA

Casual

590 (59.5)

442 (62.0)

148 (53.2)

1.1 [1.0-1.2]

1.1 [1.0-1.2]

 

Commercial sex worker

3 (0.3)

3 (0.4)

0

excluded

excluded

 

Other/unknown

232 (23.4)

151 (21.2)

81 (29.1)

0.9 [0.8-1.1]

1.0 [0.9-1.2]

 

Diagnosed by

      

GP or private specialist

412 (41.6)

315 (44.2)

97 (34.9)

ref. group

ref. group

NA

Youth/STI clinic

320 (32.3)

329 (32.1)

91 (32.7)

0.9 [0.9-1.0]

0.9 [0.9-1.0]

 

Hospital/ outpatient dept.

247 (24.9)

163 (22.7)

85 (30.6)

0.9 [0.8-0.9]

0.9 [0.8-1.0]

 

Other

12 (1.2)

7 (1.0)

5 (1.8)

0.8 [0.5-1.2]

0.8 [0.5-1.3]

 

Previous negative test

      

No previous test

336 (33.9)

221 (31.0)

115 (41.4)

ref. group

ref. group

NA

Tested before

588 (59.3)

425 (59.6)

163 (58.6)

1.1 [1.0-1.2]

0.9 [0.9-1.0]

 

Unknown

67 (6.8)

67 (9.40)

0

excluded

excluded

 

STI co-infection

      

None reported

858 (86.6)

617 (86.5)

241 (86.7)

ref. group

ref. group

NA

Any

133 (13.4)

96 (13.5)

37 (13.3)

1.0 [0.9-1.1]

1.1 [0.9-1.2]

 
  1. * PR - prevalence ratio.
  2. ** adjusted for all the factors, listed in the Table.
  3. **includes Oslo.
  4. ***time between infection and diagnosis in years.