Cancer Risk Factor Knowledge Among Teenagers in Slovenia

February 20, 2026 updated by: Institute of Oncology Ljubljana

This interventional behavioral study evaluates knowledge of cancer risk factors among teenagers in Slovenia. Students aged 12 to 18 years from the final years of primary school and all years of secondary school are assigned to complete a structured Cancer Risk Factor Knowledge Questionnaire as part of a prevention-oriented educational assessment intervention.

The study measures baseline knowledge of modifiable cancer risk factors within this defined adolescent population. The findings are intended to inform the development of targeted cancer prevention and health education strategies for adolescents in Slovenia.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This study is designed as a single-group interventional behavioral assessment conducted among Slovenian teenagers aged 12-18 years. Participants are assigned to complete a structured Cancer Risk Factor Knowledge Questionnaire as part of a prevention-oriented educational assessment intervention.

Participants include students from primary schools (8th-9th grade) and secondary schools (1st-4th year). The questionnaire assesses knowledge of modifiable cancer risk factors and was previously applied in adult populations, translated into Slovenian, and pilot-tested in a small group of students to confirm clarity and comprehensibility.

Questionnaires are completed in paper form and managed electronically using the open-source platform 1KA. The primary outcome is the total knowledge score calculated as the sum of correctly answered knowledge-based items. Higher scores indicate greater knowledge of cancer risk factors.

The study aims to evaluate baseline awareness levels within the defined adolescent population and to inform development of targeted cancer prevention and health education strategies.

Study Type

Interventional

Enrollment (Actual)

795

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Slovenia
      • Ljubljana, Slovenia, 1000
        • Institute of Oncology Ljubljana

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Students aged 12 to 18 years attending primary school (8th-9th grade) or secondary school (1st-4th year) in Slovenia
  • Ability to understand and complete the questionnaire
  • Written informed consent obtained (including parental/guardian consent when required)

Exclusion Criteria:

  • Refusal or inability to provide informed consent
  • Inability to complete the questionnaire

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Teenagers Completing Cancer Risk Factor Knowledge Questionnaire
Adolescent participants aged 12-18 years are assigned to complete a structured Cancer Risk Factor Knowledge Questionnaire as part of a single-group behavioral educational assessment intervention conducted in Slovenian primary and secondary schools.
Behavioral: Cancer Risk Factor Knowledge Questionnaire
Participants are assigned to complete a structured Cancer Risk Factor Knowledge Questionnaire as part of a prevention-oriented educational assessment intervention conducted in primary and secondary schools in Slovenia. The questionnaire assesses knowledge of modifiable cancer risk factors.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Total Knowledge Score Assessed by Structured Cancer Risk Factor Knowledge Questionnaire
Time Frame: Up to 1 day (single assessment)
Total knowledge score calculated as the sum of correctly answered knowledge-based items from the Structured Cancer Risk Factor Knowledge Questionnaire administered as a behavioral educational assessment intervention. The score is derived from predefined knowledge items within the questionnaire, and higher scores indicate greater knowledge of modifiable cancer risk factors.
Up to 1 day (single assessment)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Institute of Oncology Ljubljana

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2021

Primary Completion (Actual)

March 31, 2022

Study Completion (Actual)

May 1, 2024

Study Registration Dates

First Submitted

February 11, 2026

First Submitted That Met QC Criteria

February 20, 2026

First Posted (Actual)

February 24, 2026

Study Record Updates

Last Update Posted (Actual)

February 24, 2026

Last Update Submitted That Met QC Criteria

February 20, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • OI-CRFK-TEEN-2021-674
  • ERID-KSOPKR-0091/2021 (Other Identifier: Institute of Oncology Ljubljana (KSOPKR))

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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