A Self-efficacy Based Dietary Intervention

Not Applicable

Terminated

• Conditions: Cancer
• Interventions: Behavioral: Self-efficacy based images through instant messaging; Behavioral: Knowledge based images through instant messaging

• Registration Number: NCT04961827
• Lead Sponsor: The University of Hong Kong

Brief Summary

To develop and test the effectiveness of a dietary intervention aiming to enhance self-efficacy through sending images through instant messaging.

Detailed Description

Healthy eating is linked to improved survival and quality of life among cancer survivors. However, previous studies showed that most cancer survivors were not adhering to dietary recommendations despite having made changes post-diagnosis.

Conventional nutrition counseling interventions are often used in this population. However, they are labor and cost intensive and involved multiple sessions with participants. Written materials have often been used to facilitate improvements of dietary quality beyond nutrition counseling sessions but are outdated. Therefore, we propose to develop and test the effectiveness of a dietary intervention aiming to enhance self-efficacy through sending images through instant messaging. Methods to increase self-efficacy include performance accomplishment, persuasion, modelling and peer-modelling.

A prospective, randomized controlled trial design will be used to test the effectiveness of the intervention. A total of 168 adult Chinese cancer survivors, diagnosed with non-metastatic cancer (Stages 0-III), and have completed all active treatments, including surgery and adjuvant treatments such as chemotherapy and radiation therapy will be recruited.

Participants will be randomly assigned into one of two groups at a 1:1 ratio, using computer-generated block randomization sequences. The first group will be an active control group. Participants in this group will receive knowledge-based dietary information through an instant messaging applications biweekly for 6 times. The second group will be the intervention group. Participants will receive biweekly self-efficacy enhancing materials for 6 times. Materials will provide information about behavior-health link, provide information on consequences, provide instruction, and provide opportunities for social comparison. For example, the materials will provide recipe ideas and meal planning samples from fellow cancer survivors. All materials will be developed by a registered dietitian and will be consistent with published dietary guidelines for cancer survivors.

Participants will have follow-up appointments at 3 months. Their dietary quality and skin carotenoid status will be monitored. It is hypothesized that dietary quality will be better and skin carotenoid status will be higher for participants in the intervention group compared to participants in the active control group.

Basic Information
|
Recruitment & Eligibility
|
Study & Design
|
Trial Locations

Study Timeline

• Study First Submitted: 2021-07-09
• Study First Submitted QC: 2021-07-09
• Study First Posted: 2021-07-14
• Study Start: 2021-07-29
• Primary Completion: 2022-12-22
• Study Completion: 2022-12-22
• Status Verified: 2024-05
• Last Update Submitted: 2024-05-07
• Last Update Posted: 2024-05-09

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 68

Inclusion Criteria

• Aged 18 or above
• Diagnosed with cancer, non-metastatic (Stages 0-III)
• Ability to read Chinese and speak Cantonese or Putonghua/Mandarin
• Completed all active treatments, including surgery and adjuvant treatments such as chemotherapy and radiation therapy
• Attending clinic with nutrition counseling at study site

Read More

Exclusion Criteria

• Ethnicity other than Chinese
• Diagnosed with mental, hearing, speech, or cognitive disabilities

Read More

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Intervention: Self-efficacy based images	Self-efficacy based images through instant messaging	Intervention group with self-efficacy based images sent through instant messaging biweekly for 6 times.
Active control: knowledge based images	Knowledge based images through instant messaging	Active control group with knowledge based images sent through instant messaging biweekly for 6 times.

Primary Outcome Measures

Name	Time	Method
Changes from baseline in mean skin carotenoid reading	Baseline and 3 months	Skin carotenoid status reading measured by a reflective spectroscopy machine
Changes from baseline in mean dietary quality	Baseline and 3 months	Servings of fruit and vegetables per day, number of red meat servings per week and ratio of whole to refined grains measured by a 3-day dietary record self-completed by participants before baseline and 3-months follow-up

Trial Locations

Locations (1)

JCICC; 🇭🇰 Hong Kong, Hong Kong