Randomizing Vignettes to Understand Contributors to Trust in Primary Care Doctors

NCT06526663 | Completed

• 2 other identifiers: IRB00447825K24AG049036
• Study Type: interventional
• Target: 1,106
• Locations: 1 country
• Sites: 2

Brief Summary

In this proposed work, the investigators plan to generate experimental evidence about trust and overuse of healthcare. The protocol described below is for the first phase of this work to establish the feasibility of modifying feelings of trust via a vignette.

Conditions

Primary Care

Outcome Measures

Primary Outcomes (1)

• Wake Forest Physician Trust Scale (10 item survey)

  Scores range from 10-50 with higher scores indicating higher trust

  Immediately upon completing exposure to the vignette

Study Arms (16)

Vignette1

ACTIVE COMPARATOR

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Behavioral: vignette exposure

Vignette2

ACTIVE COMPARATOR

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Behavioral: vignette exposure

Vignette3

ACTIVE COMPARATOR

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Behavioral: vignette exposure

Vignette4

ACTIVE COMPARATOR

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Behavioral: vignette exposure

Vignette5

ACTIVE COMPARATOR

babb

Behavioral: vignette exposure

Vignette6

ACTIVE COMPARATOR

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Behavioral: vignette exposure

Vignette7

ACTIVE COMPARATOR

baaa

Behavioral: vignette exposure

Vignette8

ACTIVE COMPARATOR

abaa

Behavioral: vignette exposure

Vignette9

ACTIVE COMPARATOR

abba

Behavioral: vignette exposure

Vignette10

ACTIVE COMPARATOR

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Behavioral: vignette exposure

Vignette11

ACTIVE COMPARATOR

bbaa

Behavioral: vignette exposure

Vignette12

ACTIVE COMPARATOR

bbba

Behavioral: vignette exposure

Vignette13

ACTIVE COMPARATOR

bbbb

Behavioral: vignette exposure

Vignette14

ACTIVE COMPARATOR

baba

Behavioral: vignette exposure

Vignette15

ACTIVE COMPARATOR

abab

Behavioral: vignette exposure

Vignette16

ACTIVE COMPARATOR

aaba

Behavioral: vignette exposure

Interventions

vignette exposure BEHAVIORAL

Participants will be randomized to be exposed to one of 16 written vignettes that vary four elements of the primary care experience. The four attributes can take two levels. In the second round, individuals will be randomized to only 4 different vignettes.

Vignette1; Vignette10; Vignette11; Vignette12; Vignette13; Vignette14; Vignette15; Vignette16; Vignette2; Vignette3; Vignette4; Vignette5; Vignette6; Vignette7; Vignette8; Vignette9

Eligibility Criteria

• Age: 18 Years - 95 Years
• Gender Eligibility Details: self identified women and men or non-binary individuals are eligible
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Participants will be over the age of 18 years,
• able to read and respond in English, and
• have had one or more visits with a doctor in the past 3 years
• will be registered MTURK workers

You may not qualify if:

• None

Sponsors & Collaborators

• Johns Hopkins University: lead
• Virginia Polytechnic Institute and State University: collaborator
• National Institute on Aging (NIA): collaborator

Study Sites (2)

Johns Hopkins University

Baltimore, Maryland, 21205, United States

Location

Virginia Tech

Blacksburg, Virginia, 24061, United States

Location

Study Officials

• Jodi Segal, MD, MPH

  Johns Hopkins University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: HEALTH SERVICES RESEARCH
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 25, 2024
• First Posted: July 30, 2024
• Study Start: August 15, 2024
• Primary Completion: December 26, 2024
• Study Completion: December 26, 2024
• Last Updated: November 17, 2025

Record last verified: 2025-11

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ANALYTIC CODE
• Time Frame: 2 years after collection
• Access Criteria: Data will be shared for non-commercial purposes that are reasonable requests.

Locations

US (2)