Improving Physician Vaccine Recommendation Using Social Norms, Trust, and Presumptive Language

Sponsor
Duke University (Other)
Overall Status
Not yet recruiting
CT.gov ID
NCT05957393
Collaborator
(none)
340
4
6

Study Details

Study Description

Brief Summary

This research examines vaccination recommendation perceptions and behaviors of physicians and advanced practice providers.

Condition or Disease Intervention/Treatment Phase
  • Other: Quantity of vaccination recommendations
  • Other: Quality of vaccination recommendations
  • Other: Control
N/A

Study Design

Study Type:
Interventional
Anticipated Enrollment :
340 participants
Allocation:
Randomized
Intervention Model:
Factorial Assignment
Masking:
Single (Participant)
Primary Purpose:
Other
Official Title:
Improving Physician Vaccine Recommendation Using Social Norms, Trust, and Presumptive Language
Anticipated Study Start Date :
Aug 1, 2023
Anticipated Primary Completion Date :
Feb 1, 2024
Anticipated Study Completion Date :
Feb 1, 2024

Arms and Interventions

Arm Intervention/Treatment
Experimental: Quantity (present) x Quality (present)

Participants will receive a social norm-based message (for quantity) and will learn the AIMS method, a trust-building method using presumptive language (for quality).

Other: Quantity of vaccination recommendations
The survey contains a messaging intervention using a 2x2 randomized factorial design, where the investigators attempt to increase the quantity and/or quality of physician and APP vaccination recommendations (Quantity (present vs. absent) x Quality (present vs. absent)).

Other: Quality of vaccination recommendations
The survey contains a messaging intervention using a 2x2 randomized factorial design, where the investigators attempt to increase the quantity and/or quality of physician and APP vaccination recommendations (Quantity (present vs. absent) x Quality (present vs. absent)).

Experimental: Quantity (present) x Quality (absent)

Participants will receive a social norm-based message (for quantity).

Other: Quantity of vaccination recommendations
The survey contains a messaging intervention using a 2x2 randomized factorial design, where the investigators attempt to increase the quantity and/or quality of physician and APP vaccination recommendations (Quantity (present vs. absent) x Quality (present vs. absent)).

Experimental: Quantity (absent) x Quality (present)

Participants will learn the AIMS method, a trust-building method using presumptive language (for quality).

Other: Quality of vaccination recommendations
The survey contains a messaging intervention using a 2x2 randomized factorial design, where the investigators attempt to increase the quantity and/or quality of physician and APP vaccination recommendations (Quantity (present vs. absent) x Quality (present vs. absent)).

Experimental: Quantity (absent) x Quality (absent)

Control: Participants in this condition will receive general information about vaccines, including vaccine principles, uptake barriers, and guidelines. This information will come directly from the CDC's Advisory Committee on Immunization Practices (ACIP) website.

Other: Control
The survey contains a messaging intervention using a 2x2 randomized factorial design, where the investigators attempt to increase the quantity and/or quality of physician and APP vaccination recommendations (Quantity (present vs. absent) x Quality (present vs. absent)).

Outcome Measures

Primary Outcome Measures

  1. Change in proportion of patients that receive a vaccine recommendation [Day 1, Day 30, Day 60, Day 90]

    Proportion of patients that receive a vaccine recommendation = multiplication of the answer to the following two items: (1) "I (will) check(ed) whether a patient has/had gotten all indicated vaccines", (2) "If I saw/see a patient had not gotten an indicated vaccine, I (will) discuss(ed) getting it." Both items are answered on a scale from 0% (never) to 100% (always).

  2. Change in self-reported responsibility perception [Day 1, Day 30, Day 60, Day 90]

    Self-reported responsibility perception = answer to the following item: (1) "Recommending indicated vaccines is within the scope of my professional responsibilities". This item is answered on a scale from 0% (completely disagree) to 100% (completely agree).

  3. Change in self-reported assessment of patient recommendation acceptance [Day 1, Day 30, Day 60, Day 90]

    Self-reported assessment of patient recommendation acceptance = answer to the following item: (1) "If I recommend(ed) an indicated vaccine, my patient (will) accept(ed) that recommendation.". This item is answered on a scale from 0% (never) to 100% (always).

  4. Change in self-reported patient trust [Day 1, Day 30, Day 60, Day 90]

    Self-reported patient trust = answer to the following item: (1) "Thinking about the last/next 30 days I provided care, I can say that my patients (will) trust(ed) me as their healthcare provider". This item is answered on a scale from 0% (completely disagree) to 100% (completely agree).

  5. Change in self-reported utilization of AIMS [Day 1, Day 30, Day 60, Day 90]

    Composite score of the following items: (1) "I used/will use direct, declarative language, like: "You're due for your flu shot. We'll do that at the end of this visit"; (2) "If the patient showed/shows hesitancy about getting vaccinated, I (will) ask(ed) about their concerns, and then use(d) active listening to understand their thoughts"; (3) "If the patient showed/shows hesitancy about getting vaccinated, I (will) listen(ed) to the patient's reasoning and then summarize(d) the patient's reasoning back to them to show that I understood/understand"; (4) "If the patient still has concerns, I did/will not continue efforts to convince them." Each item is answered on a scale from 0% (never) to 100% (always).

  6. Change in self-reported rate of patient vaccine uptake [Day 1, Day 30, Day 60, Day 90]

    Answer to the following item: "Estimate what percentage of your patients is/will be fully vaccinated against […]" This item is answered on a scale from 0% to 100%. The question is being asked 8-10 times with the following name inserted for [...] in the above question: Flu COVID-19 Tetanus, Diphtheria, Pertussis HPV Hepatitis B Meningitis / Meningococcal Shingles Pneumococcal Other (which can be two other diseases that the respondent indicated)

Secondary Outcome Measures

  1. Change in belief about patient autonomy [Day 1, Day 30, Day 60, Day 90]

    Answer to the following item: "I stated / will state the patient's options - to vaccinate or not, and with which vaccine - so that they can make an informed decision." This item is answered on a scale from 0% to 100%.

  2. Change in proportion of patients that accept a recommendation [Day 1, Day 30, Day 60, Day 90]

    Proportion of patients that accept a recommendation = multiplication of the answer to the following three items: (1) "I (will) check(ed) whether a patient has/had gotten all indicated vaccines", (2) "If I saw/see a patient had not gotten an indicated vaccine, I (will) discuss(ed) getting it."; (3) "If I recommend(ed) an indicated vaccine, my patient (will) accept(ed) that recommendation." All items are answered on a scale from 0% (never) to 100% (always).

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
Yes
Inclusion Criteria:
  • Participants must be physicians, advanced practice providers, medical students, nurses/nurse practitioners, or medical fellows.

  • Must be in a position to be authorized to recommend vaccines to patients in their official professional capacities/responsibilities.

Exclusion Criteria:
  • Students or employees under the supervision of the PI who meet inclusion criteria for the study

Contacts and Locations

Locations

No locations specified.

Sponsors and Collaborators

  • Duke University

Investigators

  • Principal Investigator: Dan Ariely, PhD, Duke University

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
Duke University
ClinicalTrials.gov Identifier:
NCT05957393
Other Study ID Numbers:
  • Pro00113696
First Posted:
Jul 24, 2023
Last Update Posted:
Jul 24, 2023
Last Verified:
Jul 1, 2023
Individual Participant Data (IPD) Sharing Statement:
Yes
Plan to Share IPD:
Yes
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No
Keywords provided by Duke University

Study Results

No Results Posted as of Jul 24, 2023