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. 2012 Jul 2;12:150. doi: 10.1186/1471-2334-12-150

Table 1.

Prevalence of genital chlamydia infection and socio-demographic factors and health care utilisation, sexual behaviour and self-reported STIs among men and women aged 18–25 years in Rogaland, Norway. N = 1535

    Men (n = 605)
Women (n = 930)
n/N % 95% CI n/N % 95% CI
Age
18-21
16/254
6.3
3.9-10.0
30/453
6.6
4.7-9.3
 
22-25
15/351
4.3
2.6-6.9
24/477
5.1
3.4-7.4
Marital status
Single
30/550
5.5
3.8-7.7
54/817
6.6
5.1-8.5
 
Married
1/55
1.8
0.3-9.6
0/113
0
0-3.2
Education, years
≤14
29/490
5.9
4.2-8.4
45/675
6.7
5.0-8.8
 
15+
2/115
1.7
0.5-6.1
9/255
3.5
1.9-6.6
Occupation
Employed
18/339
5.3
3.4-8.2
23/336
6.8
4.6-10.1
 
Unemployed
4/27
14.8
5.9-32.5
4/37
10.8
4.3-24.7
 
Student/pupil
8/197
4.1
2.7-7.8
20/479
4.2
2.7-6.4
 
Other/Unknown
1/42
2.4
0.4-12.3
7/78
9.0
4.4-17.4
Country of birth
Norway
28/575
4.9
3.4-7.0
52/876
5.9
4.6-7.7
 
Europe/North America
0/13
0
0-22.8
0/29
0
0.11.7
 
Other countries
3/17
17.6
0.4-12.3
2/29
8.8
3.0-23.0
Presence of a youth clinic in municipality
Yes
20/307
6.5
4.3-9.9
38/589
6.5
4.7-8.7
No
5/15
33.3
15.2-58.3
1/50
2.0
0.4-10.5
 
Do not know
6/283
2.1
1.0-4.6
15/291
5.2
3.2-8.3
Using youth clinic services
Yes
2/66
3.0
0.8-10.4
23/312
7.4
5.0-10.8
No
29/539
5.4
3.8-7.6
31/618
5.0
3.6-7.0
Consulted a family doctor on STI
Yes
14/191
7.3
4.4-11.9
33/514
6.4
4.6-8.9
 
No
17/414
4.1
2.6-6.5
21/416
5.0
3.3-7,6
Number of partners during last year
0
1/24
4.2
0.7-20.2
0/14
0
0-21.5
1
2/303
0.7
0.2-2.4
15/563
2.7
1.6-4.4
 
2-3
11/154
7.1
4.0-12.3
19/222
8.6
5.6-13.0
 
4-5
9/66
13.6
7.3-23.9
12/83
14.5
8.5-23.6
 
5+
8/58
13.8
7.2-24.9
8/48
16.7
8.7-29.6
Total number of partners
1
0/114
0
0-3.3
0/184
0
0-2.1
 
2-3
3/130
2.3
0.8-6.6
5/212
2.4
1.0-5.4
 
4-5
1/103
1.0
0.2-5.3
5/157
3.2
1.4-7.2
 
6-10
11/124
8.9
5.0-15.2
23/215
10.7
7.2-15.5
 
10+
16/134
11.9
7.5-18.5
21/162
13.0
8.6-19.0
Previoulsy tested for chlamydia
Yes
11/161
6.8
3.9-11.8
35/510
6.9
5.0-9.4
 
No
20/444
4.5
2.9-6.9
19/420
4.5
2.9-7.0
Previously diagnosed with chlamydia
Yes
4/57
7.0
2.8-16.7
19/152
12.5
8.2-18.7
 
No
27/548
4.9
3.4-7.1
35/778
4.5
3.5-6.2
Previoulsy diagnosed with genital warts
Yes
3/40
7.5
2.6-19.9
1/64
1.6
0.3-8.3
No
28/565
5.0
3.5-7.1
53/866
6.1
4.7-7.9
Previously diagnosed with genital herpes
Yes
2/2
100
0.34-100
0/16
0
0-19.4
 
No
29/603
4.8
3.4-6.8
54/914
5.9
4.6-7.6
Presence of symptoms
Yes
10/83
12.0
6.7-20.8
20/329
6.1
4.0-9.2
 
No
21/522
4.0
2.7-6.1
34/601
5.7
4.1-7.8
Sex with a person of the same sex
Yes
0/28
0
0-12.1
5/65
7.7
3.3-16.8
 
No
31/577
5.4
3.8-7.5
49/865
5.7
4.3-7.4
Method with casual partner
No contraception
12/136
8.8
5.1-14.8
10/99
10.1
5.6-17.6
 
Condom
7/135
5.2
2.5-10.3
9/134
6.7
3.6-12.2
 
Hormonal
8/135
5.9
3.0-11.3
29/345
8.4
5.9-11.8
 
Other
4/199
2.0
0.8-5.0
6/352
1.7
0.8-3.7
Method with long-term partner
No contraception
8/114
7.0
3.6-13.2
11/129
8.5
4.8-14.6
 
Condom
4/86
4.7
1.8-11.4
1/83
1.2
0.2-6.5
 
Hormonal
15/331
4.5
2.8-7.3
34/588
5.8
4.2-8.0
 
Other
4/74
5.4
2.1-13.1
8/130
6.2
3.2-11.7
Constant partner
Yes
8/297
2.7
1.4-5.2
22/520
4.2
2.8-6.3
  No 23/308 7.5 5.0-11.0 32/410 7.8 5.6-10.8