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Completed

NCT Number: NCT03583515

Evaluating Within-Person and Between-Person Effects Of A Personalized Normative Feedback Intervention On Drinking As They Are Moderated By Self-Determination

This study evaluates within-person and between-person effects of a personalized normative feedback intervention and injunctive norms as they are altered by self-determination in heavy drinkers. Half of participants will receive personalized normative feedback and the other half will receive control feedback about media use habits.

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Key information

Conditions

Alcohol Drinking Behavior Drinking Behavior

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Houston

Houston, Texas, 77204, United States

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Student at the University of Houston
  • Above 18 years of age
  • Heavy drinker (more than 4 drinks [women] or 5 drinks [men] on a single occasion in the last 2.5 weeks and drinks, on average, at least once per week.

Treatment and study plan

Alcohol-Specific Personalized Normative Feedback

Behavioral

Participants will receive personalized normative feedback about drinking.

Social Media Personalized Normative Feedback

Behavioral

Participants will receive personalized normative feedback about social media use.

Primary outcomes

  1. Between-Person Self-Determination by PNF Interaction Predicting Consumption

    Time frame: 2-4 Weeks

    A structural equation model will be fit with baseline consumption, self-determination, intervention condition, and the interaction between self-determination and condition predicting follow-up alcohol consumption. Consumption will be measured with the Alcohol Consumption Index, Quantity-Frequency-Peak Alcohol Use Index, and the Daily Drinking Questionnaire. These scales will be used as indicators of a single latent consumption variable. That latent consumption measure will be the outcome of interest.

  2. Within-Person Self-Determination by PNF Interaction Predicting Consumption

    Time frame: 17 Days

    A multilevel model will be fit with baseline consumption, daily self determination, intervention condition, and the interaction between condition and daily self-determination predicting daily alcohol consumption. Consumption will be measured as the number of drinks consumed the previous evening.

Secondary outcomes

  1. Between-Person Self-Determination by PNF Interaction Predicting Alcohol-Related Problems

    Time frame: 2-4 Weeks

    A structural equation model will be fit with baseline consumption, alcohol-related problems, self-determination, intervention condition, and the interaction between self-determination and condition predicting follow-up alcohol-related problems. Alcohol-related problems will be measured with the Rutgers Alcohol Problems Index and the Young Adult Alcohol Consequences Questionnaire. Each of these problems measures will be split to form two indicators (for a total of four problems indicators) for an overall problems latent variable. This problems latent variable will then be used as the outcome of interest.

  2. Within-Person Self-Determination by PNF Interaction Predicting Alcohol-Related Problems

    Time frame: 17 Days

    A multilevel model will be fit with baseline consumption, daily self determination, intervention condition, and the interaction between condition and daily self-determination predicting daily alcohol alcohol-related problems. Alcohol-related problems will be measured with a checklist of non-overlapping items from the Rutgers Alcohol Problems Index and the Young Adult Alcohol Consequences Questionnaire. This combined checklist will be used to create the overall problems outcome of interest.

Sponsors and collaborators

Lead sponsor

University of Houston

Other

Collaborators

  • National Institute on Alcohol Abuse and Alcoholism (NIAAA)

Registry information

Official study title

Self-Determination Theory as A Framework For Evaluating Within-Person Effects Of Personalized Normative Feedback On Drinking

Important dates

Study start
2018
Primary completion
2019
Study completion
2019
First posted
Jul 11, 2018
Registry last updated
Apr 2, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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