ArticleBMJ open2016
Sexual and testing behaviour associated with Chlamydia trachomatis infection: a cohort study in an STI clinic in Sweden.
Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.
- Reported oral and anal sex among adolescents and adults reporting heterosexual sex in sub-Saharan Africa: a systematic review.Reproductive health · 2019Pooled it
- Nationwide Epic Cosmos Data Reveals Antidepressant Prescription Rate Trends Across Demographic Groups.Research square · 2026Article
- Estimated effect of reduced asymptomatic testing on missedThe Lancet regional health. Europe · 2025Article
- Predictors of Recent Incidence Trends in Sexually Transmitted Infections: A Systematic Review Protocol.HRB open research · 2025Article
- Article
- Patterns of sexual behaviour associated with repeated chlamydia testing and infection in men and women: a latent class analysis.BMC public health · 2022Article
- COVID-19 outbreak in a personal service setting in Kingston, Ontario, 2020.Canada communicable disease report = Releve des maladies transmissibles au Canada · 2021Article
- Chlamydia trachomatis in Iceland: Prevalence, Clinico-epidemiological Features and Comparison of Cobas 480 CT/NG and Aptima Combo 2 (CT/NG) for Diagnosis.Acta dermato-venereologica · 2021Article
- International travel as risk factor forEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2019Article
- A Multidimensional Approach to Assessing Infectious Disease Risk: Identifying Risk Classes Based on Psychological Characteristics.American journal of epidemiology · 2019Article
- Study protocol of the iMPaCT project: a longitudinal cohort study assessing psychological determinants, sexual behaviour and chlamydia (re)infections in heterosexual STI clinic visitors.BMC infectious diseases · 2018Article
- Double trouble: modelling the impact of low risk perception and high-risk sexual behaviour on chlamydia transmission.Journal of the Royal Society, Interface · 2018Article
- Population-based study of chlamydial and gonococcal infections among women in Shenzhen, China: Implications for programme planning.PloS one · 2018Article
- Repeat Chlamydia trachomatis testing among heterosexual STI outpatient clinic visitors in the Netherlands: a longitudinal study.BMC infectious diseases · 2017Article
- Prevalence of Chlamydia trachomatis Infection and Its Association with Sexual Behaviour and Alcohol Use in the Population Living in Separated and Segregated Roma Settlements in Eastern Slovakia.International journal of environmental research and public health · 2017Article
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Authors and funding
6 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGenital 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.
methodsA 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.
resultsOut 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).
conclusionsRisk 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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