Consumer Motivation for Disease Prevention 2 (Clear Labels)

NCT04228562 | Completed

• 1 other identifier: 14507018(2)
• Study Type: interventional
• Target: 256
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to examine (1) how the causal structure of a disease influences people's disease prevention decisions; and (2) how the causal structure of a disease interacts with people's regret anticipation in determining their disease prevention decisions.

Conditions

Risk Reduction

Outcome Measures

Primary Outcomes (1)

• Decision to remove X

  The decision to remove X (yes vs. no)

  Day 1: When responding to the questionnaire

Other Outcomes (3)

• Anticipated regret

  Day 1: When responding to the questionnaire

• Judgment of whether the removal of X is an opportunity to improve earnings

  Day 1: When responding to the questionnaire

• Sense of control over the final outcome

  Day 1: When responding to the questionnaire

Study Arms (4)

Non-modifiable factor ABSENT; NO anticipated regret induced

NO INTERVENTION

The experiment comprises 10 rounds of decision tasks. Participant begins with 130 points (each worth HK$0.5) in each round. After the 10 rounds, the computer randomly selects 1 round and the points from this round is paid in cash. There is a chance for the participant to develop a disease. Without prevention, the chance of getting the disease is 60%. A cause, X, is identified for the disease. X is a modifiable cause, which means that it can be changed by taking some actions. The participant has to decide whether or not to remove X. Removal of X reduces disease chance; the reduced chance varies between 10% and 50% across the 10 rounds and the exact level is communicated at the beginning of each round. The removal of X costs 30 points. Whether s/he ends up developing the disease or not is determined by a computerized lottery based on these chances. If s/he develops the disease, s/he will lose 100 points.

Non-modifiable factor ABSENT; anticipated regret induced

EXPERIMENTAL

Same description as in the "uncontrollable factor absent, no anticipated regret induced" arm, except that the participants are induced to think to what extent they will feel regretful: a) if s/he decides not to remove X but ends up developing the disease and b) if s/he decides to remove X but still gets the disease.

Other: induction of anticipated regret

Non-modifiable factor PRESENT; NO anticipated regret induced

EXPERIMENTAL

The experiment comprises 10 rounds of decision tasks. Participant begins with 130 points (each worth HK$0.5) in each round. After the 10 rounds, the computer randomly selects 1 round and the points from this round is paid in cash. There is a chance for the participant to develop a disease. Without prevention, the chance of getting the disease is 60%. Two causes, X and Y, are identified for the disease. X is a modifiable cause, which means that it can be changed by taking some actions. The participant has to decide whether or not to remove X. Removal of X reduces disease chance; the reduced chance varies between 10% and 50% across the 10 rounds and the exact level is communicated at the beginning of each round. The removal of X costs 30 points. Whether s/he ends up developing the disease or not is determined by a computerized lottery based on these chances. If s/he develops the disease, s/he will lose 100 points.

Other: non-modifiable factor

Non-modifiable factor PRESENT; anticipated regret induced

EXPERIMENTAL

Same as the "uncontrollable factor present, no anticipated regret induced" arm, except that the participants are induced to think to what extent they will feel regretful: a) if s/he decides not to remove X but ends up developing the disease and b) if s/he decides to remove X but still gets the disease.

Other: non-modifiable factor; Other: induction of anticipated regret

Interventions

non-modifiable factor OTHER

the presence of an uncontrollable / unremovable risk factor for a disease

Non-modifiable factor PRESENT; NO anticipated regret induced; Non-modifiable factor PRESENT; anticipated regret induced

induction of anticipated regret OTHER

higher level of elaboration on potential regret

Non-modifiable factor ABSENT; anticipated regret induced; Non-modifiable factor PRESENT; anticipated regret induced

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• students currently studying at the Chinese University of Hong Kong

You may not qualify if:

• None

Sponsors & Collaborators

• Chinese University of Hong Kong: lead
• University of Toronto: collaborator

Study Sites (1)

Chinese University of Hong Kong

Hong Kong, Hong Kong

Location

Related Publications (1)

• Binder S, Nuscheler R. Risk-taking in vaccination, surgery, and gambling environments: Evidence from a framed laboratory experiment. Health Econ. 2017 Dec;26 Suppl 3:76-96. doi: 10.1002/hec.3620.

  PMID: 29285871 BACKGROUND

MeSH Terms

Conditions

Risk Reduction Behavior

Condition Hierarchy (Ancestors)

Behavior

Study Officials

• Wing Man Yeung, PhD

  Chinese University of Hong Kong, Hong Kong

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Masking Details: Each participant will only receive the instruction pertaining to the arm to which he/she is assigned. The Research Assistant who conducts the study does not know about the hypothesis.
• Purpose: OTHER
• Intervention Model: FACTORIAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate Professor of Marketing

Model Details: Factorial Assignment The study has a 2 (Factor: one modifiable cause vs. one modifiable + one non-modifiable causes) ✕ 2 (Anticipated regret induction: yes vs. no) between-subject design. Participants will be randomly assigned to one of the 4 between-subject conditions. There is also a within-subject variable. Each subject will respond to 10 rounds of decision task with 5 different levels of overall disease risk reduction brought by the removal of X. The 5 levels of risk reduction are: (i) Removal of X reduces disease risk from 60% to 50% ; (ii) 60% to 40%; (iii) 60% to 30%; (iv) 60% to 20%; (v) 60% to 10%.

Study Record Dates

• First Submitted: January 12, 2020
• First Posted: January 14, 2020
• Study Start: January 15, 2020
• Primary Completion: April 15, 2020
• Study Completion: April 15, 2020
• Last Updated: September 1, 2020

Record last verified: 2020-08

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ANALYTIC CODE
• Time Frame: Data will become available after manuscript is published, for 5 years starting from publication date.
• Access Criteria: Data will only be made available for research purpose.

Locations

HK (1)