This study will evaluate the effect of a short, animated storytelling intervention video on sodium intake as a major risk factor for cardiovascular disease on immediate and medium-term retention of knowledge about the risks of cardiovascular diesaes due to increased sodium intake. We will also measure voluntary engagement with the content of the short, animated storytelling intervention video on positive psychological capital. In this 4-armed, parallel, randomized controlled trial, 10,000 adult, US participants will be randomly assigned to (1) a short, animated storytelling intervention video on sodium as a cardiovascular disease risk factor followed by surveys assessing the facts om sodium and cardiovascular disease conveyed in the video (2) the surveys only, (3) an attention placebo control video followed by the before mentioned surveys, and (4) an arm that is exposed to neither the video nor the surveys. Two weeks later, participants in all four arms will complete all of the surveys. The primary outcome is knowledge about the cardiovascular disease risk associated with increased sodium intake (immediate and medium-term). The major scondary outcome is the extent of voluntary engagement with the short, animated storytelling video content.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
TRIPLE
Enrollment
10,000
Participants in the Intervention Arm will view a short, animated storytelling video on dietary sodium and the risks of cardiovascular disease due to increased intake of sodium.
The Attention Placebo Control Arm will view an attention placebo control video, unrelated to the outcomes measured in this trial.
Immediate effect of the short, animated storytelling intervention video on knowledge about dietary sodium as a cardiovascular risk factor
The immediate effect of the short, animated storytelling intervention video on knowledge about dietary sodium as a cardiovascular risk factor assessed by a sodium questionnaire containing 30 questions.
Time frame: immediately after watching the video
Medium-term effect of the short, animated storytelling intervention video on knowledge about dietary sodium as a cardiovascular risk factor
The medium-term effect of the short, animated storytelling intervention video on knowledge about dietary sodium as a cardiovascular risk factor assessed by a sodium questionnaire containing 30 questions.
Time frame: 2 weeks after watching the video
Immediate effect of the short, animated storytelling intervention video on behavioral expectation to reduce dietary sodium.
The immediate effect of the short, animated storytelling intervention video on behavioral expectation to reduce dietary sodium assessed by a questionnaire containing 30 questions on behavioral expectation.
Time frame: immediately after watching the video
Medium-term effect of the short, animated storytelling intervention video on behavioral expectation to reduce dietary sodium.
The medium-term effect of the short, animated storytelling intervention video on behavioral expectation to reduce dietary sodium assessed by a questionnaire containing 30 questions on behavioral expectation.
Time frame: 2 weeks after watching the video
Voluntary post-trial engagement (frequency) with the video content.
Assessment of the frequency (absolute number) of watching the trial videos after completion of the trial questionnaires
Time frame: 2 weeks after entering the trial
Voluntary post-trial engagement (duration) with the video content.
Assessment of the duration (in minutes) of watching the trial videos after completion of the trial questionnaires
Time frame: 2 weeks after entering the trial
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