Effectiveness of in-person and phone-based interviews

Last registered on September 01, 2025
View Trial History

Pre-Trial

Trial Information

General Information

Title
Effectiveness of in-person and phone-based interviews
RCT ID
AEARCTR-0016604
Initial registration date
August 22, 2025

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
September 01, 2025, 2:53 PM EDT

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

Locations

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Primary Investigator

Name
Australian Centre of Evaluation (ACE)
Affiliation
The Treasury
Contact Primary Investigator

Other Primary Investigator(s)

Additional Trial Information

Status
On going
Start date
2025-07-17
End date
2026-05-05
Keywords
Other
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
A study on the effectiveness of in-person and phone-based interviews
External Link(s)

Registration Citation

Citation
(ACE), Australian Centre of Evaluation. 2025. "Effectiveness of in-person and phone-based interviews." AEA RCT Registry. September 01. https://doi.org/10.1257/rct.16604-1.0
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2025-07-17
Intervention End Date
2026-05-05

Primary Outcomes

Primary Outcomes (end points)
Interview effectiveness
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Mixed methods randomised trial with qualitative research
Experimental Design Details
Not available
Randomization Method
Mixed methods randomised trial with qualitative research
Randomization Unit
Individuals / couples
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
800 (but number may change following pre-registration)
Sample size: planned number of observations
1000 (but number may change following pre-registration)
Sample size (or number of clusters) by treatment arms
50:50 allocation to treatment and control
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Macquarie University Human Research Ethics Committee (HREC)
IRB Approval Date
2025-04-14
IRB Approval Number
520251864262322
Analysis Plan

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