Deze pagina is automatisch vertaald en de nauwkeurigheid van de vertaling kan niet worden gegarandeerd. Raadpleeg de Engelse versie voor een brontekst.

Default Option Nudging Intervention to Improve the Adherence Rates of Cancer Screening

26 juni 2026 bijgewerkt door: Zhisheng Zheng, Harbin Medical University

Default Option Nudging Intervention to Improve the Adherence Rates of Cancer Screening in High-risk Population: Randomized Controlled Trial and Intervention Disclosure Analysis

The goal of this clinical trial is to learn if a behavioral "nudge" strategy, specifically a default option, can improve screening participation in populations at high risk for lung and stomach cancer. The main questions it aims to answer are:

  1. Does presenting a screening appointment as a default option increase the likelihood that high-risk individuals will choose to be screened?
  2. How do participants react, and what is their level of acceptance, when the nudge intervention is disclosed to them?
  3. Does this transparency (disclosing the nudge) change their subsequent screening decisions? Researchers will compare a default option group to a standard control group to see if the nudge effectively increases screening adherence.

Participants will:

  1. Read a short educational text about lung or stomach cancer and its screening.
  2. Complete an online questionnaire.
  3. Make a decision regarding a simulated cancer screening appointment.
  4. Read a disclosure explaining the behavioral nudge strategy used during the study.
  5. Re-evaluate their screening decision and answer questions regarding their attitude toward the nudge.

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Studietype

Ingrijpend

Inschrijving (Werkelijk)

1200

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • China
    • Heilongjiang
      • Harbin, Heilongjiang, China, 150081
        • Harbin Medical University

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Ja

Beschrijving

Inclusion Criteria:

  • High-risk population of lung cancer or gastric cancer.
  • Lung cancer high-risk definition (based on the 2024 Lung Cancer Screening and Early Diagnosis and Treatment Program organized by the National Health Commission of the PRC): Age ≥50 years and pack-years of smoking ≥20, including former smoking ≥20 pack-years, but smoking cessation less than 15 years (Note: Pack-years of smoking = number of packs smoked per day × number of years smoked).
  • Gastric cancer high-risk definition (based on the 2024 Gastric Cancer Screening and Early Diagnosis and Treatment Program organized by the National Health Commission of the PRC): Age ≥45 years old and living in areas with a high incidence of gastric cancer (Liaoning, Fujian, Gansu, Shandong, Jiangsu).
  • Ability to read and comprehend simplified Chinese.
  • The informed consent statement was read and confirmed.

Exclusion Criteria:

  • Reading impairment preventing independent questionnaire completion.
  • Failure to pass attention checks and logical consistency tests embedded within the questionnaire.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Onderzoek naar gezondheidsdiensten
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Dubbele

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Geen tussenkomst: control group (lung cancer screening)
Control group participants received neutral, informational content about lung cancer and screening. This content included lung cancer's status as a leading cause of cancer mortality, the challenges of late-stage diagnosis, and LDCT as the gold standard screening method. Participants were informed that high-risk individuals, particularly long-term smokers, require annual screening due to elevated cancer risk, with each participant explicitly told they qualified as high-risk due to their smoking history. Meanwhile, CanSPUC and its purpose were also shown to the participants. The screening participation question for controls was framed as: "We provide available time slots for free lung cancer screening. You can directly view available appointment times and make reservations according to your preference. Would you like to schedule lung cancer screening?"
Experimenteel: intervention group (lung cancer screening)
Intervention participants received the same neutral information plus a default option nudge. The critical modification involved reframing the screening participation measure as: "We have already scheduled a free lung cancer screening appointment for you, which you can attend at your convenience. If you do not wish to participate, please indicate below." We also default to "Yes, I would like to make an appointment for lung cancer screening and see the available hours for lung cancer screening" for this question.
Gedragsmatig: Default Options
Participants in this arm are subjected to a behavioral "nudge" using a default option mechanism during a simulated online appointment process for cancer screening. Instead of being asked to actively schedule an appointment (an opt-in approach), the screening appointment is presented to them as pre-selected or pre-scheduled (an opt-out approach). Furthermore, to evaluate the ethical and behavioral impact of transparency, this intervention uniquely includes a "disclosure" phase: after the initial decision, participants are explicitly informed about the nudge strategy that was just applied to them, and their screening intention is immediately re-measured.
Geen tussenkomst: control group (gastric cancer screening)
Control group participants received neutral, informational content about gastric cancer and screening. This content included gastric cancer's status as a cause of cancer mortality, the challenges of late-stage diagnosis, and endoscope as the gold standard screening method. Participants were informed that high-risk individuals require screening per 5 years, with each participant explicitly told they qualified as high-risk due to their living regions. Meanwhile, CanSPUC and its purpose were also shown to the participants. The screening participation question for controls was framed as: "We provide available time slots for free gastric cancer screening. You can directly view available appointment times and make reservations according to your preference. Would you like to schedule gastric cancer screening?"
Experimenteel: intervention group (gastric cancer screening)
Intervention participants received the same neutral information plus a default option nudge. The critical modification involved reframing the screening participation measure as: "We have already scheduled a free gastric cancer screening appointment for you, which you can attend at your convenience. If you do not wish to participate, please indicate below." We also default to "Yes, I would like to make an appointment for gastric cancer screening and see the available hours for lung cancer screening" for this question.
Gedragsmatig: Default Options
Participants in this arm are subjected to a behavioral "nudge" using a default option mechanism during a simulated online appointment process for cancer screening. Instead of being asked to actively schedule an appointment (an opt-in approach), the screening appointment is presented to them as pre-selected or pre-scheduled (an opt-out approach). Furthermore, to evaluate the ethical and behavioral impact of transparency, this intervention uniquely includes a "disclosure" phase: after the initial decision, participants are explicitly informed about the nudge strategy that was just applied to them, and their screening intention is immediately re-measured.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Percentage of Participants Who Accept the Cancer Screening Appointment
Tijdsspanne: Immediately after the default option intervention
This outcome is assessed via a dichotomous choice (Yes/No) embedded in the simulated online scheduling system within the questionnaire. The value reported will be the percentage of participants who choose to accept and schedule the screening appointment.
Immediately after the default option intervention

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Participant Attitude Score Towards the Default Option Nudge
Tijdsspanne: Immediately after the disclosure of the intervention
This measure is assessed via a self-reported questionnaire using a Likert scale. Scores range from 1 to 5, where 1 indicates a very negative attitude and 5 indicates a very positive attitude. Higher scores represent a better attitude towards the nudge strategy.
Immediately after the disclosure of the intervention
Self-Reported Score of the Nudge's Influence on Decision-Making
Tijdsspanne: Immediately after the disclosure of the intervention
This measure is assessed via a self-reported questionnaire using a Likert scale. Scores range from 1 to 5, where 1 indicates no influence and 5 indicates extreme influence. Higher scores indicate that the participant felt the default option had a greater influence on their appointment decision.
Immediately after the disclosure of the intervention
Acceptance Score of the Default Option Nudge in Public Health Services
Tijdsspanne: Immediately after the disclosure of the intervention
This measure is assessed via a self-reported questionnaire using a Likert scale. Scores range from 1 to 5, where 1 indicates completely unacceptable and 5 indicates completely acceptable. Higher scores indicate higher social acceptance and suitability of using such behavioral nudges in public health promotion.
Immediately after the disclosure of the intervention
Percentage of Participants Who Accept the Appointment After Disclosure
Tijdsspanne: Immediately after the disclosure of the intervention
This outcome is assessed via a secondary dichotomous choice (Yes/No) presented after the participant reads the disclosure statement explaining the nudge. The value reported is the percentage of participants who choose to accept the screening at this final stage.
Immediately after the disclosure of the intervention

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Harbin Medical University

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

27 april 2025

Primaire voltooiing (Werkelijk)

1 juni 2025

Studie voltooiing (Werkelijk)

1 juni 2025

Studieregistratiedata

Eerst ingediend

23 juni 2026

Eerst ingediend dat voldeed aan de QC-criteria

26 juni 2026

Eerst geplaatst (Werkelijk)

2 juli 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

2 juli 2026

Laatste update ingediend die voldeed aan QC-criteria

26 juni 2026

Laatst geverifieerd

1 juni 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • HMUIRB2025029PRE

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

JA

Beschrijving IPD-plan

All collected de-identified individual participant data (IPD) that underlie the results reported in the final publication. This includes demographic characteristics, group allocation, behavioral screening decisions, and responses related to attitudes toward the disclosure intervention.

IPD-tijdsbestek voor delen

Data will be available beginning 6 months and ending 36 months following the publication of the article.

IPD-toegangscriteria voor delen

Researchers who provide a methodologically sound proposal.

IPD delen Ondersteunend informatietype

  • LEERPROTOCOOL
  • SAP
  • ICF

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

Abonneren