EMA for the Exposure to Alcohol Advertisements

NCT04055402 | Completed

• 1 other identifier: EMA_alcohol2019
• Study Type: interventional
• Target: 100
• Locations: 1 country
• Sites: 1

Brief Summary

The present proposed study has 3 primary objectives to address the knowledge gap regarding the exposure to alcohol advertisements in university students: (1) To estimate the frequency of exposure to alcohol advertisements and promotion of alcohol drinking culture (PADC) via television, print, radio, posters, banners, billboards, point-of-sale websites and social media in university students, (2) To examine the effect of exposure to alcohol advertising and PADC on alcohol use, binge drinking, pro-drinking attitudes and acceptance of alcohol advertisements, and (3) To examine the discrepancy in measuring the exposure to alcohol advertisements and PADC between the ecological momentary assessment and a traditional retrospective survey.The proposed study is a combination of (1) a time-based system-triggered EMA, which will collect real-time exposure to alcohol advertisements and (2) longitudinal surveys involving university students who are current alcohol users. Consented participants will be individually randomized to the EMA and non-EMA group. The EMA group will complete a baseline questionnaire, and complete 4 EMAs prompted randomly and 1 end-of-day survey with a smartphone app per day over a week. After 2 weeks of completing the EMA, they will be contacted to complete a telephone follow-up survey. The non-EMA group will only complete the baseline and the follow-up surveys.

Conditions

Alcohol Drinking

Keywords

Alcohol

Outcome Measures

Primary Outcomes (2)

• Mean exposure to alcohol advertisement or promotion of alcohol drinking culture during the 2-week EMA period

  Mean exposure to alcohol advertisement or promotion of alcohol drinking culture during the 2-week EMA period (EMA group only)

  1 month

• Mean exposure to alcohol advertisement or promotion of alcohol drinking culture in the past month

  Mean exposure to alcohol advertisement or promotion of alcohol drinking culture in the past month

  1 month

Secondary Outcomes (3)

• Mean unit of alcohol intake during the 2-week EMA period

  1 month

• Mean unit of alcohol intake in the past week at 1-month follow-up

  1 month

• Any binge drinking reported in the past week at 1-month follow-up

  1 month

Study Arms (2)

EMA group

EXPERIMENTAL

Participate in the baseline survey, 2-week ecological momentary assessments and a 1-month follow-up survey

Other: Ecological momentary assessments

Control group

ACTIVE COMPARATOR

Participate in the baseline survey,and a 1-month follow-up survey

Other: Control

Interventions

Ecological momentary assessments OTHER

The staff will help the participants in the EMA group to install and set up the EMA App. The briefing will also emphasise the role of EMA participants that they should perform their normal activities as usual instead of finding out the alcohol advertisements and PADC intentionally. Within 2 weeks after completing the baseline survey, participants in EMA group will complete 5 EMAs prompted regularly every day for 14 consecutive days. The participants will then be contacted for a follow-up survey 2 weeks after the completion of EMA.

EMA group

Control OTHER

Completion of a baseline questionnaire and a 1-month follow-up survey.

Control group

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• (1) aged between 18 and 35 years, (2) using a mobile smartphone with internet access, (3) self-report drink any alcohol in past 30 days (current drinkers), (4) he/she will stay in Hong Kong during the 2-week EMA study period, and (5) able to read and write in Chinese

Sponsors & Collaborators

• The University of Hong Kong: lead

Study Sites (1)

The University of Hong Kong

Hong Kong, 00, Hong Kong

Location

MeSH Terms

Conditions

Alcohol Drinking

Interventions

Ecological Momentary Assessment

Condition Hierarchy (Ancestors)

Drinking Behavior; Behavior

Intervention Hierarchy (Ancestors)

Psychological Tests; Behavioral Disciplines and Activities

Study Officials

• Derek Cheung, PhD

  The University of Hong Kong

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: HEALTH SERVICES RESEARCH
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor

Study Record Dates

• First Submitted: August 12, 2019
• First Posted: August 13, 2019
• Study Start: January 1, 2020
• Primary Completion: June 30, 2020
• Study Completion: June 30, 2020
• Last Updated: November 4, 2020

Record last verified: 2020-11

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL

Locations

HK (1)