A survey experiment on physicians decision to offer video consultations

Last registered on May 30, 2024
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Pre-Trial

Trial Information

General Information

Title
A survey experiment on physicians decision to offer video consultations
RCT ID
AEARCTR-0013707
Initial registration date
May 29, 2024

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
May 30, 2024, 3:58 AM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
May 30, 2024, 11:22 AM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

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Primary Investigator

Name
Simon Reif
Affiliation
ZEW Mannheim
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Other Primary Investigator(s)

PI Name
Paul Peters
PI Affiliation
ZEW Mannheim
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PI Name
Theresa Bolz
PI Affiliation
ZEW Mannheim
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Additional Trial Information

Status
In development
Start date
2024-06-03
End date
2024-09-30
Keywords
Health
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
This is the pre-analysis plan for a survey experiment on the motivations to offer video consultations of German ambulatory care physicians. The experiment consists of three stages. 1) An information treatment that provides a nudge which is supposed to increase the rate of physicians that offer video consulations, 2) a vigniette experiment to determine the importance of different dimensions in the choice to offer video consultations and 3) a multi-armed-bandit study where invitation characteristics are varied to identify the best strategy for researchers
to survey physicians.
External Link(s)

Registration Citation

Citation
Bolz, Theresa, Paul Peters and Simon Reif. 2024. "A survey experiment on physicians decision to offer video consultations." AEA RCT Registry. May 30. https://doi.org/10.1257/rct.13707-1.1
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2024-06-03
Intervention End Date
2024-09-30

Primary Outcomes

Primary Outcomes (end points)
Share of physicians that offer video consultations
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Intention to offer video consultations; Participation in the survey;
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
See Pre-Analysis-Plan.
Experimental Design Details
Not available
Randomization Method
Randomization in LimeSurvey.
Randomization Unit
Physician.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
No clusters.
Sample size: planned number of observations
A random sample of 25.000 physicians will be invited to take part in the survey (20.000 by email, 5.000 by letter). We expect a response rate of 25 percent.
Sample size (or number of clusters) by treatment arms
Repondents are split 50/50 between treatment and control. Given our expected response rate this would be 3125 physicians in the treatment and 3125 physicians in the control group.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
We expect the treatment to increase video consultation offerings by 5 percentage points more in the treatment group compared to the control group. This effect would need 432 observations per group for a power of 80% at a significance level of 5%.
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan

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