A Chatbot Intervention for Reducing HPV Vaccine Hesitancy

Not Applicable

Completed

• Conditions: Anal Cancer; Cervical Cancer; Penile Cancer
• Interventions: Behavioral: Personalized Chatbot Intervention; Behavioral: No Chatbot Control; Behavioral: Non-Personalized Chatbot Intervention

• Registration Number: NCT05959564
• Lead Sponsor: University of Maryland, College Park

Brief Summary

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

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.

Study Timeline

• Study First Submitted: 2023-07-06
• Study First Submitted QC: 2023-07-17
• Study First Posted: 2023-07-25
• Study Start: 2023-07-26
• Primary Completion: 2023-08-08
• Study Completion: 2023-08-08
• Status Verified: 2024-07
• Results First Submitted: 2024-07-23
• Results First Submitted QC: 2024-07-23
• Last Update Submitted: 2024-07-23
• Results First Posted: 2024-10-21
• Last Update Posted: 2024-10-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 456

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

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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

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Personalized Chatbot Condition	Personalized Chatbot Intervention	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).
No Chatbot Control Condition	No Chatbot Control	Participants will read a standard CDC HPV vaccine message without interacting with any chatbot that delivers additional messages.
Non-Personalized Chatbot Condition	Non-Personalized Chatbot Intervention	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.

Primary Outcome Measures

Name	Time	Method
Attitudes Toward HPV Vaccination	baseline posttest (test took approximately 5 minutes to complete)	Participants' attitudes toward HPV vaccination were measured by seven questions such as "The HPV vaccine is beneficial for adolescents." The responses were recorded on 1 (strongly disagree) to 5 (strongly agree) scales. Final score was the average of all 7 questions.
Intentions Toward HPV Vaccination	baseline posttest (test took approximately 5 minutes to complete)	Participants' intentions toward vaccinating their children against HPV were measured by three questions such as "I am likely to get my child/children the HPV vaccine." Responses were indicated on 1 (strongly disagree) to 5 (strongly agree) scales. The final score was the average of the three questions.

Secondary Outcome Measures

Name	Time	Method
Ratings of the Chatbot	baseline posttest (test took approximately 5 minutes to complete)	Ratings of the Chatbot were measured by nine questions such as "How would you describe the HPV chatbot you just interacted with? - Engaging" on 1 (strongly disagree) to 5 (strongly agree) scales. The final score was the average of the nine questions.

Trial Locations

Locations (1)

University of Maryland, College Park (Online Survey-Experiment); 🇺🇸 College Park, Maryland, United States