Nudge interventions to promote vegetable purchasing behavior: non-randomised controlled supermarket trial

UMIN ID: UMIN000055970

Registered date:28/10/2024

Basic Information

• Recruitment status: Pending
• Health condition(s) or Problem(s) studied: N/A
• Date of first enrollment: 2024/10/28
• Target sample size: 3
• Countries of recruitment: Japan
• Study type: Interventional

Intervention(s)

Intervention 1: To clarify the space reserved for vegetables, nudge materials correspond to the Easy and Attractive aspects of the EAST framework will be placed in shopping carts.
Intervention 2: In addition to the nudge intervention in "Intervention 1," posters showing the amount of vegetables required for 70 g, which corresponds to the Attractive, Social, and Timely aspects of the EAST framework, will be placed in the vegetable section.
Control: no treatment

Outcome(s)

• Primary Outcome: Vegetable sales amount and number of sales recorded in the Point of Sale (POS) system
• Secondary Outcome: Sales amount, number of sales, and number of buyers of non-vegetable items recorded in the POS system

Key inclusion & exclusion criteria

• Age minimum: 20years-old
• Age maximum: Not applicable
• Gender: Male and Female
• Exclude criteria: Data that the store staff pointed out as clearly incorrect.

Related Information

• Primary Sponsor: Yamagata University
• Source(s) of Monetary Support: Yamagata University