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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 uppdaterad av: 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.

Studieöversikt

Status

Har inte rekryterat ännu

Studietyp

Interventionell

Inskrivning (Beräknad)

454

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

65 år och äldre (Äldre vuxen)

Tar emot friska volontärer

Ja

Kön som är behöriga för studier

Allt

Beskrivning

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

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Hälsovårdsforskning
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Enda

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: 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.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Uptake of seasonal influenza vaccination
Tidsram: 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

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Stage of change related to seasonal influenza vaccination uptake
Tidsram: 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
Tidsram: 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)

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

16 november 2026

Primärt slutförande (Beräknad)

31 december 2027

Avslutad studie (Beräknad)

31 december 2027

Studieregistreringsdatum

Först inskickad

8 november 2026

Först inskickad som uppfyllde QC-kriterierna

8 november 2026

Första postat (Faktisk)

13 november 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

13 november 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

8 november 2026

Senast verifierad

1 november 2026

Mer information

Termer relaterade till denna studie

Andra studie-ID-nummer

  • GRF14611325

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

NEJ

IPD-planbeskrivning

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.

Läkemedels- och apparatinformation, studiedokument

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Nej

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Nej

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