The Impact of Health Information Interventions on Women's Breast Cancer Screening Rates

Last registered on October 28, 2024
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Pre-Trial

Trial Information

General Information

Title
The Impact of Health Information Interventions on Women's Breast Cancer Screening Rates
RCT ID
AEARCTR-0014641
Initial registration date
October 24, 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
October 28, 2024, 1:13 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
Jingyi Lei
Affiliation
Central University of Finance and Economics
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Other Primary Investigator(s)

Additional Trial Information

Status
On going
Start date
2024-10-16
End date
2025-03-31
Keywords
Behavior, Gender
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Smoking is recognized as a significant risk factor for various cancers, including breast cancer. Despite existing studies indicating an association between smoking and breast cancer, many women remain insufficiently informed about this risk. One published study has indicated that nicotine in cigarettes can facilitate the spread of breast cancer cells to the lungs, and secondhand smoke has been linked to breast cancer incidence among women (Terry and Rohan, 2002). In mainland China, there are over 300 million smokers, with men constituting a substantial proportion of this population. This not only increases their own risk of lung cancer but also poses health risks to women exposed to secondhand smoke. However, many men often fail to recognize the health risks that their smoking behaviors pose to women.

Information interventions are effective strategies for disseminating health knowledge, and through regular Short Message Services(SMS), they can enhance public awareness of health risks. We aim to fill a research gap in this area, particularly regarding the understanding of the impact of smoking on women's breast cancer. We will focus on the influence of smoking behaviors and environments on women's health, attempting to reveal how information interventions can improve women's awareness of this issue.
External Link(s)

Registration Citation

Citation
Lei, Jingyi. 2024. "The Impact of Health Information Interventions on Women's Breast Cancer Screening Rates." AEA RCT Registry. October 28. https://doi.org/10.1257/rct.14641-1.0
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2024-11-01
Intervention End Date
2024-12-20

Primary Outcomes

Primary Outcomes (end points)
We are interested in the differential impact of various health information interventions on breast cancer screening rates among women. We anticipate that the control group exposed to health information interventions highlighting the dangers of smoking to women's health and the necessity of early breast cancer screening will exhibit higher breast cancer screening rates.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
A randomized controlled trial (RCT) design will be employed. Participants will be randomly assigned into three study arms: one arm will receive health information highlighting the association between smoking and breast cancer risk, as well as the necessity of early breast cancer screening; a second arm will receive information solely on the necessity of breast cancer screening; and the third arm will serve as a control group that does not receive any information intervention.

We will train healthcare facilitators to support the intervention. In the treatment arm, each SMS reminder will be sent monthly, aiming to enhance awareness and encourage screening behaviors among participants.
Experimental Design Details
Not available
Randomization Method
randomization done in office by a computer
Randomization Unit
Registered phone number
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
3 groups
Sample size: planned number of observations
15,000
Sample size (or number of clusters) by treatment arms
We plan to collaborate with a selected hospital in the designated area, observing women who have registered at the hospital. The study will categorize participants into three groups: two treatment arms and one control arm. Each treatment arm will consist of approximately 6,500 participants, while the control arm will include 1,500 participants.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
CENTRAL UNIVERSITY OF FINANCE AND ECONOMICS
IRB Approval Date
2024-10-23
IRB Approval Number
IRB20241023001
Analysis Plan