Impacts of Sugar Warnings on Weight Bias

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorUniversity of North Carolina, Chapel Hill

About this trial

This study aims to examine the effects of added sugar warning labels for sugar-sweetened beverages (SSBs) on explicit weight bias and body weight attributional judgements. Participants will be assigned to view either control labels or added sugar warning labels applied on SSBs in an experimental store. Participants will shop for beverages in the store and take a computer survey during four visits to the store, spaced approximately one week apart.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

18 years and older

Bought sugary drinks from a store at least once during the past week

Willing to attend 4 in-person study appointments

Disqualifiers

None

Trial design

Design model

Parallel

Treatments tested in this trial

  • Control label

    Behavioral

    The control label will display a neutral, square-shaped barcode. Labels will be placed on the front of SSB containers in the experimental store.

  • Added sugar warning

    Behavioral

    The added sugar warning will be octagon-shaped and will state "HIGH IN ADDED SUGAR." Warnings will be placed on the front of SSB containers in the experimental store.

Treatment groups

543 Participants
are divided into 2 treatment groups
Group A: Control labelOther 1 intervention
Group B: Added sugar warningExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Explicit weight bias, mean score

Explicit weight bias will be measured by survey through seven items. Items will present participants with pairs of antonyms and ask that they select the box between antonyms that they feel best describes their feelings and beliefs about people with obesity: (1) lazy - hard-working, (2) no will power - has will power, (3) good self - control - poor self-control, (4) active - inactive, (5) self-indulgent - self-sacrificing, (6) dislikes food - likes food, (7) undereats - overeats. Response options, which will be presented as 5 boxes between antonyms, will be coded in a categorical 1-5 range, where higher scores represent higher endorsement of a stereotype that contributes to weight bias. Each participant's responses to each item will then be averaged across the seven items to obtain their final score on the outcome in a 1-5 range, where higher scores represent higher explicit weight bias.

Time frame
Assessed via survey after exposure to intervention (i.e., shopping task) 2 times approximately 4 weeks apart (i.e., in visits 1 and 4)

Secondary outcomes

1

Body weight attributional judgements, mean score

Body weight attributional judgements will be measured by survey through two items. Items will ask participants how much they agree with two statements: (1) People with obesity are responsible for their weight; (2) People with obesity are to blame for their weight. Response options will be on a 5-point scale from strongly disagree to strongly agree, with higher scores representing higher agreement. Each participant's responses to each item will be averaged to obtain their final score on the outcome in a 1-5 range, where higher scores represent higher attribution of personal responsibility for body weight.

Time frame
Assessed via survey after exposure to intervention (i.e., shopping task) 2 times approximately 4 weeks apart (i.e., in visits 1 and 4).

Other outcomes

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