How do nudges affect no-shows to cancer screening in times of pandemic? evidence from mammography during COVID19 outbreak

Last registered on November 12, 2020
View Trial History

Pre-Trial

Trial Information

General Information

Title
How do nudges affect no-shows to cancer screening in times of pandemic? evidence from mammography during COVID19 outbreak
RCT ID
AEARCTR-0006684
Initial registration date
November 11, 2020

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 12, 2020, 8:17 AM EST

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

Locations

Country
Israel
Region

Primary Investigator

Name
Hadar Goldshtein
Affiliation
Contact Primary Investigator

Other Primary Investigator(s)

Additional Trial Information

Status
In development
Start date
2020-11-10
End date
2021-03-31
Keywords
Behavior, Finance & Microfinance, Health, Other
Additional Keywords
no-show, nudges, SMS-remainders, Covid19
JEL code(s)
Secondary IDs
Abstract
In this work, we will examine the effect of SMS reminders on no-shows to mammograms through a controlled experiment emphasizing the effect of different behavioral mechanisms on the degree of influence of the messages. In particular, we will focus on two types of content. The first emphasizes the health cost that comes with failing to get a mammogram (a mechanism based on selfish consideration). The second is based on the harm to other women waiting in line for examination (a mechanism based on altruistic consideration). We will examine the effect of this content on the degree of non-arrival to examination relative to a laconic text reminder
External Link(s)

Registration Citation

Citation
Goldshtein, Hadar. 2020. "How do nudges affect no-shows to cancer screening in times of pandemic? evidence from mammography during COVID19 outbreak." AEA RCT Registry. November 12. https://doi.org/10.1257/rct.6684-1.0
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2020-11-10
Intervention End Date
2021-02-28

Primary Outcomes

Primary Outcomes (end points)
we believe that the type of the SMS – reminders can affect women to show in the test. We consider that the treatment groups will bring more women to the test.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
In our experiment we will send SMS reminder messages to women who had scheduled a mammogram test.

Randomization will be performed as follows:

Control group. The SMS message will contain information about the test location, time and date.

Treatment group No. 1. Like the control group, The SMS will contain information about the test location, time and date, and also information about the risk of breast cancer and the associated mortality rates in Israel and how early detection of the disease saves lives.

Treatment group No. 2. 2: Like the control group, The SMS will contain information about the test location, time and date, and in addition an altruistic supplement - a reminder that non arrival without prior notice, would delay appointments of other women who are in need of the mammogram
Experimental Design Details
Randomization Method
We use the randomness in the last digit of the woman's ID to assign women to one of the 3 groups. E.g., women who have 0-3 in their last digit ID will receive the regular SMS remainder (the control group).
Randomization Unit
the participants in the trial are women, patients, that come to the hospitals to do a mammography scan. the experiment is not clustered
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
no cluster
Sample size: planned number of observations
10,000 women
Sample size (or number of clusters) by treatment arms
treatment 1: 3333 women
treatment 2: 3333 women
control: 3333 women
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Ben-Gurion University of the Negev
IRB Approval Date
2020-09-06
IRB Approval Number
0052-20-ASMC
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