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Home Sampling Versus Conventional Sampling for Screening of Urogenital Chlamydia Trachomatis in Young Men and Women.

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00283127
Recruitment Status : Completed
First Posted : January 27, 2006
Last Update Posted : March 3, 2010
Information provided by:
Norwegian Institute of Public Health

Brief Summary:
Urogenital Chlamydia trachomatis infection is the most common bacterial sexually transmitted infection in Norway. Urogential C.trachomatis infection can easily be treated with antibiotics. However, left untreated it is a major cause of pelvic inflammatory disease (PID) that can lead to complications such as infertility, ectopic pregnancy and chronic pelvic pain in women. Most infections are asymptomatic and many do not seek the doctor for testing. Therefore cases remain undetected and untreated.We want to determine the efficacy and feasibility of screening for urogenital C. trachomatis infection with home sampling (intervention) compared to the current strategy of conventional sampling at the doctor's office (control) in identifying men and women aged 18-25 years with urogenital C.trachomatis infection (Part A). We also want to identify factors influencing the acceptability of home sampling for C.trachomatis infections (Part B)and determine factors associated with C.trachomatis infections (Part C).

Condition or disease Intervention/treatment Phase
Chlamydia Trachomatis Mass Screening Procedure: Home sampling (urine test) for uro-genital C.trachomatis. Not Applicable

Detailed Description:

Study design The different objectives will be addressed through a complex design with several sub-studies.

Part A is a randomised control trial where we compare the intervention group who will be offered home-sampling and recieve a package by mail (containing information on urogenital C.trachomatis infections, sampling eqiupment for urine tests and a questionnaire) with a control group who will continue with todays system of conventional sampling at the doctores office (no intervention). The study population are all men and women between 18-25 years of age in Rogaland County in Norway. The population register will be used to randomly assigne to either the intervention group or the control group.The intervention group will be asked to take a urine sample and send this by mail to the laboratory for analysis within three months after the invitation, and to fill out and return a questionnaire. For the ones in the control group all samples(urethral or cervical swabs or urine samples)taken within the same three months will be sendt to the same laboratory. In this part of the study we will measure the yield ratio for the tested, diagnosed and treated in the two groupsafter the study period of three months. All samples either obtained at home or at the physician's office, will be analyzed by BDProbeTec ET Chlamydia Amplified DNA assay. This is a well documented Nucleid Acid amplification method. Samples will be analysed according to manufactures instructions. Data on number of tested and diagnosed in the two groups will be collected from Stvanger University Hospital. Data on number of treated will be collected from the Norwegain Prescription Database by merging the study dataset with their datafiles. This way we will recive information on who has received treatment for C.rachomatis within one month after after a positive C.trachomatis test.

In Part B a case-cohort from the intervention group (Part A) consisting of a random selection of respondents and non-respondents will be used to determine the feasibility of home sampling as a screening strategy by measuring the risk (OR) related to different factors that determined response. Data are collected through selfadminitered questionnaires.

Part C is a cross sectional study consisting of all respondents in the intervention group. In this part we will measure Prevalence Ratio(PR) of urogential C.trachomatis infections associated with different factors by comparing C.trachomatis positive and C.trachomatis negative in the intervention group.

Part D is an economic study which will be addressed in a separate protocol.

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Study Type : Interventional  (Clinical Trial)
Enrollment : 41719 participants
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Home Sampling Versus Conventional Sampling for Screening of Urogenital Chlamydia Trachomatis in Young Men and Women. - A Randomised Control Trial
Study Start Date : February 2006
Study Completion Date : September 2006

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. Yield ratio tested for uro-genital C.trachomatis infection
  2. Yield ratio diagnosed for uro-genital C.trachomatis infection
  3. Yield ratio treated for uro-genital C.trachomatis infection

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 25 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • All persons in the population register in Rogaland County from 18-25 years of age (born between 1/1-1980 - 31/12 -1987) registered 01.11.05. Per 11.11.2005 the size of this population was 41 793. The age cut off is decided because this is the age group with the highest incidence of Chlamydia infections.

Exclusion Criteria:

  • All persons in the population register in Rogaland born between 1/1-1980 - 31/12 -1987 registered as:

    • living abroad (including Svalbard) - 6 persons
    • without (permanent) address - 49 persons
    • with client address- 6 persons with secret adress - 16 persons
    • military - 1 person

In total 78 persons were excluded

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00283127

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Norwegain Institute of Public Health
Oslo, Norway, 0403
Sponsors and Collaborators
Norwegian Institute of Public Health
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Study Director: Preben Aavitsland, MD NIPH
Publications automatically indexed to this study by Identifier (NCT Number):
Layout table for additonal information Identifier: NCT00283127    
Other Study ID Numbers: 2.2005.1223
First Posted: January 27, 2006    Key Record Dates
Last Update Posted: March 3, 2010
Last Verified: January 2009
Keywords provided by Norwegian Institute of Public Health:
Chlamydia trachomatis
Mass screening
Home sampling
Urine test
Additional relevant MeSH terms:
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Chlamydia Infections
Chlamydiaceae Infections
Gram-Negative Bacterial Infections
Bacterial Infections
Sexually Transmitted Diseases, Bacterial
Sexually Transmitted Diseases
Genital Diseases, Male
Genital Diseases, Female