Field experiment on psychological barriers to health behaviors

Last registered on November 17, 2018
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Pre-Trial

Trial Information

General Information

Title
Field experiment on psychological barriers to health behaviors
RCT ID
AEARCTR-0003563
Initial registration date
November 17, 2018

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
November 17, 2018, 9:59 PM EST

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

Locations

Country
Nigeria
Region

Primary Investigator

Name
Yoshito Takasaki
Affiliation
University of Tokyo
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Other Primary Investigator(s)

PI Name
Ryoko Sato
PI Affiliation
Harvard School of Public Health
Contact Investigator

Additional Trial Information

Status
Completed
Start date
2016-10-01
End date
2017-09-30
Keywords
Health
Additional Keywords
JEL code(s)
Secondary IDs
Abstract
This study examines whether psychic costs reduce the vaccination take-up for tetanus-toxoid vaccine among women in northeastern Nigeria. To measure psychic costs, we asked women in the control group to simply complete a short survey. For the treatment group, we asked women to additionally receive the tetanus-toxoid vaccine. We evaluate the rate of task completion (survey completion vs. survey completion + vaccination) to measure the magnitude of psychic costs. Randomization was done at the individual level among 800 women in 41 villages.
External Link(s)

Registration Citation

Citation
Sato, Ryoko and Yoshito Takasaki. 2018. "Field experiment on psychological barriers to health behaviors." AEA RCT Registry. November 17. https://doi.org/10.1257/rct.3563-1.0
Former Citation
Sato, Ryoko and Yoshito Takasaki. 2018. "Field experiment on psychological barriers to health behaviors." AEA RCT Registry. November 17. https://www.socialscienceregistry.org/trials/3563/history/37400
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2016-10-15
Intervention End Date
2016-10-30

Primary Outcomes

Primary Outcomes (end points)
Vaccination take-up
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
We asked women in the control group to simply complete a short survey at their house. For the treatment group, we asked women to additionally receive the tetanus-toxoid vaccine at their house.
Experimental Design Details
Randomization Method
Randomization done in office by a computer
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
41 villages
Sample size: planned number of observations
800 women
Sample size (or number of clusters) by treatment arms
440 women in treatment, 360 women in 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
Ethics Committee of The University of Tokyo
IRB Approval Date
2016-08-10
IRB Approval Number
16-103
Analysis Plan

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials