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- Velicko, IngaKarolinska Institutet,Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden.;Publ Hlth Agcy Sweden, Unit Monitoring & Evaluat, Stockholm, Sweden. (author)
Sexual and testing behaviour associated with Chlamydia trachomatis infection : a cohort study in an STI clinic in Sweden
- Article/chapterEnglish2016
Publisher, publication year, extent ...
- 2016-08-26
- BMJ,2016
- electronicrdacarrier
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- LIBRIS-ID:oai:DiVA.org:uu-308377
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-308377URI
- https://doi.org/10.1136/bmjopen-2016-011312DOI
- http://kipublications.ki.se/Default.aspx?queryparsed=id:134169577URI
Supplementary language notes
- Language:English
- Summary in:English
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- Background: Genital chlamydia infection (chlamydia) is the most commonly reported sexually transmitted infection (STI) in Sweden. To guide prevention needs, we aimed to investigate factors associated with chlamydia. Methods: A cohort of visitors aged 20-40 years at an urban STI clinic in Sweden was recruited. Behavioural data were collected using a self-administered questionnaire. Self-sampled specimens were tested for chlamydia by a DNA amplification assay. Statistically significant (p<0.05) and epidemiologically relevant covariates were entered in a multivariate Poisson model adjusted for potential confounders (age and gender). Backward stepwise elimination produced a final model. Multiple imputation was used to account for missing values. Results: Out of 2814 respondents, 1436 were men with a chlamydia positivity rate of 12.6% vs 8.9% in women. Lifetime testing for chlamydia and HIV was high (82% and 60%, respectively). Factors significantly associated with chlamydia were: 20-24 years old (adjusted risk ratio (ARR)=2.10, 95% CI 1.21 to 3.65); testing reason: contact with a chlamydia case (ARR=6.55, 95% CI 4.77 to 8.98) and having symptoms (ARR=2.19, 95% CI 1.48 to 3.24); 6-10 sexual partners (ARR=1.53, 95% CI 1.06 to 2.21); last sexual activity 'vaginal sex and oral sex and anal sex and petting' (ARR=1.84, 95% CI 1.09 to 3.10); alcohol use before sex (ARR=1.98, 95% CI 1.10 to 3.57); men with symptoms (ARR=2.09, 95% CI 1.38 to 3.18); tested for chlamydia (ARR=0.72, 95% CI 0.55 to 0.94). Conclusions: Risk factors associated with chlamydia were consistent with previous reports in similar settings and suggest no major changes over time. Increased risk for chlamydia infection associated with high-risk behaviour (eg, alcohol use, increased number of sexual partners) supports the need for behavioural interventions in this population such as promotion of safer sex behaviour (condom use) and testing.
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- Ploner, AlexanderKarolinska Institutet,Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden. (author)
- Sparén, PärKarolinska Institutet,Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden. (author)
- Marions, LenaKarolinska Institutet,Karolinska Inst, Dept Clin Sci & Educ, Stockholm, Sweden.;Stockholm South Gen Hosp, Sect Obstet & Gynaecol, Stockholm, Sweden. (author)
- Herrmann, BjörnUppsala universitet,Klinisk mikrobiologi och infektionsmedicin(Swepub:uu)bjorherr (author)
- Kühlmann-Berenzon, SharonPubl Hlth Agcy Sweden, Unit Monitoring & Evaluat, Stockholm, Sweden. (author)
- Karolinska InstitutetKarolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden.;Publ Hlth Agcy Sweden, Unit Monitoring & Evaluat, Stockholm, Sweden. (creator_code:org_t)
Related titles
- In:BMJ Open: BMJ6:82044-6055
Internet link
- https://uu.diva-portal.org/smash/get/diva2:1049641/FULLTEXT01.pdffulltext:print
- https://bmjopen.bmj.com/content/bmjopen/6/8/e011312.full.pdf
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-308377
- https://doi.org/10.1136/bmjopen-2016-011312
- http://kipublications.ki.se/Default.aspx?queryparsed=id:134169577
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