Clinical Trials Logo

Clinical Trial Summary

To evaluate the relative efficacy of an online intervention based on the Trans-theoretical Model delivered by a fully-automated Chatbot with natural language processing functions versus a control in promoting pneumococcal vaccination uptake among Hong Kong people aged ≥65 years. A total of 374 participants will be randomized evenly to either the intervention group or the control group. Participants in the intervention group will receive Chatbot-delivered interventions tailored to their stage of change regarding PV uptake in a conversational way at Month 0, 1, 2, and 3. Participants in the control group will receive Chatbot-delivered general information related to PV at Month 0, 1, 2, and 3. All participants will be followed up 6 and 12 months after completion of the intervention.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT05772117
Study type Interventional
Source Chinese University of Hong Kong
Contact Zixin Wang, PhD
Phone +852 22528740
Email wangzx@cuhk.edu.hk
Status Recruiting
Phase N/A
Start date March 13, 2023
Completion date August 31, 2024

See also
  Status Clinical Trial Phase
Recruiting NCT05057208 - Does the COVID-19 Vaccination Rate Change According to the Education, Income, Culture Level, Prosociality ?
Completed NCT05764174 - Digital Applications to Monitor Novel Coronavirus Disease and Response in Colombia - Syndromic and Vaccination Surveillance N/A
Completed NCT05529030 - COVID-19 Booster Readiness Survey N/A
Active, not recruiting NCT05479383 - Tobacco Use and Uptake of COVID-19 Vaccinations
Active, not recruiting NCT04779827 - Improving Health Equity for COVID-19 Vaccination for At-risk Populations Using Online Social Networks N/A
Completed NCT04871243 - Children Vaccination From 11 to 14 Years Old
Completed NCT05923320 - The Effect of Education Given to Postpartum Women on Their Attitudes Towards Childhood Vaccinations and Breastfeeding N/A
Completed NCT05252936 - Effectiveness of a Mayan Language Social Media Campaign on COVID-19 Vaccine Beliefs in Guatemala N/A
Withdrawn NCT05442762 - Social Media-based Vaccine Confidence and Hesitancy Monitoring
Completed NCT05390697 - Educational Videos to Address Vaccine Hesitancy in Childhood Immunization N/A
Not yet recruiting NCT05795855 - An Adaptive Prenatal Intervention to Increase Childhood Vaccinations N/A
Active, not recruiting NCT05419232 - COVID-19 Vaccine Uptake Trial N/A
Completed NCT05225064 - Increasing COVID-19 Vaccine Uptake in Developing Countries (Bihar) N/A
Completed NCT04728594 - Emails Promoting COVID-19 Vaccination Among Healthcare Workers N/A
Recruiting NCT05866237 - COVID-19 Vaccine Uptake Amongst Underserved Populations in East London N/A
Completed NCT05043155 - Strategies to Continue Gynae-oncology Services in the Era of COVID-19 Outbreak: Concerns and Challenges in a Referral Centre in Malaysia
Completed NCT05182554 - COVID-19 Messaging for Vaccination N/A
Completed NCT05155241 - A Randomized Controlled Trial Evaluating an Online Intervention in Increasing Seasonal Influenza Vaccination Among Community Dwelling People Aged ≥65 Years N/A
Active, not recruiting NCT05891626 - Group Intervention on Vaccine Confidence N/A
Completed NCT04203277 - Improving Vaccinations for Young Children (IVY) N/A