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
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]

* PR - prevalence ratio.

** adjusted for all the factors, listed in the Table.

**includes Oslo.

***time between infection and diagnosis in years.

Jakopanec et al.

Jakopanec et al. BMC Public Health 2013 13:144   doi:10.1186/1471-2458-13-144

Open Data