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Minerva Ginecologica 2008 February;60(1):29-37


language: English

Prevalence and risk factors for Chlamydia trachomatis infection in young women in North-West of Italy

Latino M. A. 1, Caneparo A. 1, Rosso C. 1, De Maria D. 1, De Intinis G. 1, Intorcia P. 1, Petrinco M. 2

1 Department of Bacteriology, Department of Clinical Pathology, OIRM Sant’Anna Hospital, Turin, Italy 2 Department of Public Health and Microbiology, Department of Statistics and Applied Maths Diego de Castro, University of Turin, Turin, Italy


Aim. The aim of the study was to estimate the prevalence of Chlamydia trachomatis infection, risk factors and best predictors of infection in young sexually active women in north-west of Italy.
Methods. One thousand one hundred and eighty 18-24 years old women of family planning clinics and three STI Clinics over Turin city area underwent vaginal swabs to detect infection and completed a questionnaire. Logistic regression and multivariate analysis identified risk factors and a receiver operating characteristic (ROC) curve was used to assess the model accuracy.
Results. Overall prevalence of infection was 10.4% 2.71 times higher (P<0.001) among women afferent to STI clinics than family planning clinics. Higher among women of Eastern European, Asian and South American ethnic origin (P=0.012) compared to Western Euro-pean or African ethnic origin. Age at first intercourse (P=0.006), absence of a stable partner (P<0.001) partner with urogenital complaints (P<0.001), number of lifetime partners (P<0.001) number of partners in the last 6 months (P<0.001) history of occasional intercourses (P<0.001) and of IST (P<0.007) resulted associated with chlamydial infection. Multivariate analysis showed setting, partner with urogenital complaints and number of lifetime partners as best predictors of infection. ROC curve on variables from multivariate analysis showed an AUC of 0.732.
Conclusion. The study showed high rates of Chlamydial infection among sexually active women between 18-24 years in north-west area of Italy. Predictors of infection are related to sexual activity and to population sub-groups. Selective screening protocols should be supported by wider and more representative studies in order to increase knowledge and involve public opinion.

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