A Chatbot Intervention for Reducing HPV Vaccine Hesitancy

Study Overview
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Brief Summary
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The goal of this project is to test the efficacy of a chatbot intervention for reducing HPV vaccine hesitancy among African American parents. An online experiment will be conducted to test the effectiveness of the chatbot intervention with African American parents. Results of this project will inform future communication interventions for reducing vaccine hesitancy among African American parents.

Detailed Description
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The goal of this project is to test the efficacy of a chatbot intervention for reducing HPV vaccine hesitancy among African American parents. An online survey-experiment will be conducted. In the survey-experiment, participants will first answer questions related to their attitudes toward childhood vaccines and see a brief CDC message about HPV vaccine. Then they will be directed to interact with a chatbot designed to deliver personalized HPV vaccine messages (tailored to the participant's personality) or a similar chatbot with non-personalized messages. There will also be a control condition where participants will see the brief CDC message about HPV vaccine but will not interact with any chatbot. All participants will answer questions related to their attitudes toward HPV vaccination, intentions to vaccinate their children, as well as other message response measures.

Official Title
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A Chatbot Intervention for Reducing HPV Vaccine Hesitancy

Conditions
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Cervical Cancer, Anal Cancer, Penile Cancer

Intervention / Treatment
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* Behavioral: Personalized Chatbot Intervention
* Behavioral: Non-Personalized Chatbot Intervention
* Behavioral: No Chatbot Control


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 18 years or older Self-identify as Black or African American Parents of children under 18 years old Access to computer/laptop/mobile device and the Internet Exclusion Criteria: Under 18 years Does not self-identify as Black or African American Not a parent of at least a child under 18 years old No access to computer/laptop/mobile device or the Internet

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Personalized Chatbot Condition<br>After reading a standard CDC HPV vaccine message, participants will interact with a chatbot designed to deliver personalized HPV vaccine messages (i.e., tailored to their personalities). | Behavioral: Personalized Chatbot Intervention<br>* In this intervention, participants will first see a standard CDC HPV vaccine message. After that they will be invited to interact with a chatbot designed to deliver additional HPV vaccine messages, which are tailored to their personalities.<br>|
| Experimental: Non-Personalized Chatbot Condition<br>After reading a standard CDC HPV vaccine message, participants will interact with a chatbot designed to deliver HPV vaccine messages, which are not tailored to their personalities. | Behavioral: Non-Personalized Chatbot Intervention<br>* In this intervention, participants will first see a standard CDC HPV vaccine message. After that they will be invited to interact with a chatbot designed to deliver additional HPV vaccine messages, which are not tailored to their personalities.<br>|
| Active Comparator: No Chatbot Control Condition<br>Participants will read a standard CDC HPV vaccine message without interacting with any chatbot that delivers additional messages. | Behavioral: No Chatbot Control<br>* In this intervention, participants will see a standard CDC HPV vaccine message only and will not interact with any chatbot.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Attitudes toward HPV vaccination | Participants' attitudes toward HPV vaccination will be measured by seven questions such as The HPV vaccine is beneficial for adolescents. | Immediately after the intervention | 
| Intentions toward HPV vaccination | Participants' intentions toward vaccinating their children against HPV will be measured by three questions such as I am likely to get my child/children the HPV vaccine. | Immediately after the intervention | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Ratings of the Chatbot | Participants in the chatbot conditions will rate the chatbot on a number of characteristics such as engagingness, relevance, and trustworthiness. | Immediately after the intervention |