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Chlamydia trachomatis Testing Patterns and Prevalence of Genital Chlamydial Infection Among Young Men and Women in Central Norway 1990–2003: A Population-Based Registry Study

Bakken, Inger Johanne PhD*; Nordbø, Svein Arne MD, PhD; Skjeldestad, Finn Egil MD, PhD*

Sexually Transmitted Diseases: January 2006 - Volume 33 - Issue 1 - p 26-30
doi: 10.1097/01.olq.0000187929.36118.d2

Objective: The study objective was to investigate Chlamydia trachomatis (CT) testing patterns, prevalence, and incidence among men and women in Sør-Trøndelag county, central Norway, 1990–2003.

Goal: The goal of this study was to obtain data for recommendations regarding CT screening.

Study Design: Laboratory data on CT tests for persons 15 to 24 years old were retrieved and analyzed.

Results: Four percent of men and 44% of women had been CT tested at least once by the age of 20. By the age of 25, 44% of men and 84% of women had been tested. Prevalence at first test was at its peak in 2000–2002 (men: 15–19 years 18%, 20–24 years 23%; women: 15–19 years 11%, 20–24 years 9%). Incidence estimates were higher for persons with a positive first test than for persons with a negative first test.

Conclusions: More men and more female teenagers need to be tested. Repeat testing is particularly important among people who have been diagnosed with CT.

Twenty-one percent of men and 85% of women in Norway had been tested for Chlamydia trachomatis by the age of 25 years, and 15% of the female population had had a chlamydial infection.

From the *Department of Epidemiology, SINTEF Health Research, Trondheim, Norway; and the † Department of Medical Microbiology, Trondheim University Hospital, Trondheim, Norway

IJB has a postdoctoral scholarship from the Norwegian Foundation for Health and Rehabilitation (EXTRA funds) through The Norwegian Support Organization for Infertility.

Correspondence: Inger Johanne Bakken, PhD, Department of Epidemiological Research, SINTEF Health Research, N-7465 Trondheim, Norway. E-mail:

Received for publication February 2, 2005, and accepted June 14, 2005.

© Copyright 2006 American Sexually Transmitted Diseases Association