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Combining an Effective Rule-based Chatbot With ChatGPT-supported Real-time Question-answer Functions to Promote Seasonal Influenza Vaccination Among Community-dwelling People Aged 65 Years and Above

8. november 2026 opdateret af: Zixin Wang, Chinese University of Hong Kong

Combining an Effective Rule-based Chatbot With ChatGPT-supported Real-time Question-answer Functions to Promote Seasonal Influenza Vaccination Among Community-dwelling People Aged 65 Years and Above: a Partially Blinded Randomized Controlled Trial

This study is a partially blinded (outcome assessors and data analysts) and parallel-group randomized controlled trial. Community-dwelling people aged ≥65 years who have not received the SIV for the approaching flu season will be randomized evenly (1:1) into either the intervention group or the control group. During the intervention period, the intervention group will have access to the hybrid combination of a rule-based chatbot (SIV-Chatbot) with the ChatGPT-supported real-time Question & Answer (QA) functions, while the control group will have access only to the SIV-Chatbot.

The SIV-Chatbot will deliver the same interventions for both groups. The number of intervention sessions (four) and timing (week 0, 2, 4 & 6) will also be the same. In the intervention group, the hybrid Chatbot will invite the participants to raise open-ended questions related to SIV using flexible methods (such as voice messages, typing with keyboards, or handwriting) at each session. The ChatGPT will answer these questions immediately in the format of text messages. The functions can be used repeatedly throughout the intervention period (weeks 0-6), and participants will be free to spend as much time as they want on such functions.

Telephone interviews will be conducted at baseline (T0), after completion of the intervention (T1), and six months after T1 (T2). The primary outcome will be the self-reported SIV uptake measured at T2. The research team will validate that outcome by requesting the participants upload an image of their SIV receipt, while hiding their personal identification, via the WhatsApp account used in this study.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

454

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

65 år og ældre (Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • aged ≥65 years
  • possession of a Hong Kong ID
  • able to speak and comprehend Cantonese
  • have a smartphone with internet access
  • have either installed or are willing to install WhatsApp on their smartphone
  • have not taken seasonal influenza vaccination for the approaching flu season

Exclusion Criteria:

  • score ≤16 in the validated telephone version of the Cantonese Mini-Mental State Examination (T-CMMSE)
  • either blindness or deafness
  • with known contraindications to the SIV as indicated by the Hong Kong Centre for Health Protection (e.g., history of severe allergic reactions to any of the vaccine component or a previous dose of SIV and bleeding disorders)

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Sundhedstjenesteforskning
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Intervention group

Have access to the hybrid combination of a rule-based chatbot (SIV-Chatbot) with the ChatGPT-supported real-time QA functions

After assessing participants' stage of change (SOC) regarding SIV uptake, the rule-based component (SIV-Chatbot) will deliver online interventions tailored to their current SOC. There will be four intervention sessions at week 0, 2, 4 and 6. In addition, the hybrid Chatbot will invite the participants to raise open-ended questions related to SIV using flexible methods at each session. The ChatGPT will answer these questions immediately in the format of text messages. The functions can be used repeatedly throughout the intervention period (weeks 0-6), and participants will be free to spend as much time as they want on such functions.

Aktiv komparator: Control group

Have access only to a rule-based chatbot (SIV-Chatbot)

After assessing participants' stage of change (SOC) regarding SIV uptake, the rule-based chatbot (SIV-Chatbot) will deliver online interventions tailored to their current SOC. There will be four intervention sessions at week 0, 2, 4 and 6.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Uptake of seasonal influenza vaccination
Tidsramme: Six months after completion of the intervention

The primary outcome will be the self-reported seasonal influenza vaccination uptake measured at T2 (six months after completion of the intervention). The research team will validate that outcome by requesting the participants upload an image of their receipt.

Six months after completion of the intervention

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Stage of change related to seasonal influenza vaccination uptake
Tidsramme: T0 (baseline), T1 (after completion of intervention), and T2 (six months after completion of the intervention)

Participants' SOC will be measured at T0 (baseline), T1 (after completion of intervention), and T2 (six months after completion of the intervention) by using validated questions

T0 (baseline), T1 (after completion of intervention), and T2 (six months after completion of the intervention)
Knowledge and attitudes related to seasonal influenza vaccination
Tidsramme: T0 (baseline) and T2 (6 months after completion of the intervention)

Knowledge and attitudes will be measured at T0 (baseline) and T2 (6 months after completion of the intervention) by validated tools

T0 (baseline) and T2 (6 months after completion of the intervention)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

16. november 2026

Primær færdiggørelse (Anslået)

31. december 2027

Studieafslutning (Anslået)

31. december 2027

Datoer for studieregistrering

Først indsendt

8. november 2026

Først indsendt, der opfyldte QC-kriterier

8. november 2026

Først opslået (Faktiske)

13. november 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

13. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • GRF14611325

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

The data presented in this study are available from the corresponding author upon request. The data are not publicly available as they contain sensitive personal information.

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