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Completed

NCT Number: NCT07778875

Self-Reported Colorectal Cancer Screening Uptake

This randomized controlled trial evaluated the effect of a Health Belief Model-based multicomponent education program on colorectal cancer screening completion, knowledge, health beliefs, and screening attitudes among adults aged 50-70 years. A total of 176 participants were randomly assigned to an intervention group or a control group. The intervention group received an individual 30-35-minute face-to-face education session supported by a video and an informational brochure. The control group received no structured colorectal cancer education during the four-week study period and was offered the brochure after completing the Week 4 assessment. Colorectal cancer knowledge, health beliefs, and screening attitudes were assessed at baseline and Week 4. Self-reported screening completion during the follow-up period was assessed at Week 4. It was hypothesized that participants receiving the program would demonstrate greater improvements in colorectal cancer-related knowledge, health beliefs, screening attitudes, and screening uptake than participants in the control group.

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Key information

Conditions

Colorectal Cancer Control and Prevention Adherence Interventions Behavior Health Behavior Health Education Medication Adherence Patient Acceptance of Health Care Patient Compliance Treatment Adherence and Compliance

Age range

50 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Bartın Yaşam Merkezi

Bartın, Merkez, 74100, Turkey (Türkiye)

About this study

This two-arm, parallel-group rrandomized controlled trial was conducted at Bartın Healthy Living Center in Bartın, Türkiye. Community-dwelling adults aged 50-70 years were assigned to the intervention or control group using simple randomization.

The intervention group received an individual educational program developed according to the Health Belief Model. The program combined face-to-face education, video-based education, and an informational brochure. It addressed colorectal cancer risk factors, symptoms, prevention, recommended screening methods, and the importance of early detection. The educational content was structured to address perceived susceptibility, perceived severity, perceived benefits, perceived barriers, health motivation, and confidence in engaging in screening behavior.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Aged 50-70 years
  • Residing in Bartın city center
  • No history of colorectal cancer
  • Willing to participate in the study
  • Provided written informed consent

Exclusion criteria

  • Previous diagnosis of or treatment for colorectal cancer
  • Communication difficulties that prevented completion of the questionnaires
  • Cognitive impairment that prevented completion of the questionnaires

Treatment and study plan

Health Belief Model-Based Colorectal Cancer Education Program

Behavioral

The individual educational program combined face-to-face instruction, video-based educational content, and an informational brochure. It addressed colorectal cancer risk factors, symptoms, prevention, early detection, recommended screening methods, health beliefs, and participation in colorectal cancer screening.

Primary outcomes

  1. Self-Reported Colorectal Cancer Screening Uptake

    Time frame: 4 weeks after the intervention

    The number and proportion of participants who self-reported completing at least one colorectal cancer screening test during the four-week follow-up period were assessed. Screening included fecal occult blood testing or colonoscopy.

Secondary outcomes

  1. Change From Baseline in Colorectal Cancer Knowledge Score

    Time frame: Baseline and 4 weeks after the intervention

    Colorectal cancer knowledge was assessed using the knowledge section of the Colorectal Cancer Early Detection Knowledge and Screening Practices Form. Scores range from 0 to 18, with higher scores indicating greater knowledge of colorectal cancer risk factors, symptoms, screening methods, and the recommended screening age.

  2. Change From Baseline in Perceived Confidence and Benefits Score

    Time frame: Baseline and 4 weeks after the intervention

    Perceived confidence and benefits were assessed using the 11-item confidence/benefits subscale of the Colorectal Cancer Health Belief Model Scale. Raw total scores range from 11 to 55. For analysis, the total score was divided by 11 to obtain a mean item score ranging from 1 to 5. Higher scores indicate greater confidence in and perceived benefits of colorectal cancer screening.

  3. Change From Baseline in Perceived Barriers Score

    Time frame: Baseline and 4 weeks after the intervention

    Perceived barriers to colorectal cancer screening were assessed using the six-item perceived barriers subscale of the Colorectal Cancer Health Belief Model Scale. Raw total scores range from 6 to 30. For analysis, the total score was divided by six to obtain a mean item score ranging from 1 to 5. Higher scores indicate greater perceived barriers to colorectal cancer screening.

  4. Change From Baseline in Health Motivation Score

    Time frame: Baseline and 4 weeks after the intervention

    Health motivation was assessed using the five-item health motivation subscale of the Colorectal Cancer Health Belief Model Scale. Raw total scores range from 5 to 25. For analysis, the total score was divided by five to obtain a mean item score ranging from 1 to 5. Higher scores indicate greater health motivation.

  5. Change From Baseline in Perceived Susceptibility Score

    Time frame: Baseline and 4 weeks after the intervention

    Perceived susceptibility was assessed using the six-item perceived susceptibility subscale of the Colorectal Cancer Health Belief Model Scale. Raw total scores range from 6 to 30. For analysis, the total score was divided by six to obtain a mean item score ranging from 1 to 5. Higher scores indicate greater perceived susceptibility to colorectal cancer.

  6. Change From Baseline in Perceived Severity Score

    Time frame: Baseline and 4 weeks after the intervention

    Perceived severity was assessed using the five-item perceived severity subscale of the Colorectal Cancer Health Belief Model Scale. Raw total scores range from 5 to 25. For analysis, the total score was divided by five to obtain a mean item score ranging from 1 to 5. Higher scores indicate greater perceived severity of colorectal cancer.

  7. Change From Baseline in Attitudes Toward Cancer Screening Score

    Time frame: Baseline and 4 weeks after the intervention

    Attitudes toward cancer screening were assessed using the 24-item Attitudes Toward Cancer Screening Scale. Raw total scores range from 24 to 120. For analysis, the total score was divided by 24 to obtain a mean item score ranging from 1 to 5. Higher scores indicate more positive attitudes toward cancer screening.

Sponsors and collaborators

Lead sponsor

Bartın Unıversity

Other

Registry information

Official study title

Effect of a Health Belief Model-Based Multicomponent Education Program on Self-Reported Colorectal Cancer Screening Uptake Among Adults Aged 50-70 Years: A Randomized Controlled Trial

Acronym: CRC-HBM

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Aug 21, 2026
Registry last updated
Sep 4, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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