NCT04961827

A Self-efficacy Based Dietary Intervention

Eat Well After Cancer: a Randomized Controlled Trial of a Self-efficacy Based Dietary Intervention Among Chinese Cancer Survivors

• Status: Terminated
• Phase: N/A
• Study type: Interventional
• Enrollment: 68 (actual)
• Sponsor: The University of Hong Kong · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

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have often been used to facilitate improvements of dietary quality beyond nutrition counseling sessions but are outdated.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.

Conditions

• Cancer

Interventions

Type	Name	Description
BEHAVIORAL	Self-efficacy based images through instant messaging	A total of 6 images will be sent to participants via instant messaging. Images will utilize concepts in the Theory of self-efficacy to increase dietary self-efficacy among participants and hence improve dietary quality beyond that of conventional nutrition counseling.
BEHAVIORAL	Knowledge based images through instant messaging	A total of 6 images will be sent to participants via instant messaging. Images will consist of information covered in nutrition counseling sessions, such as those related to serving sizes.

Timeline

• Start date: 2021-07-29
• Primary completion: 2022-12-22
• Completion: 2022-12-22
• First posted: 2021-07-14
• Last updated: 2024-05-09

Locations

1 site across 1 country: Hong Kong