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Effect of an Information- and Self-management App for People With Knee Osteoarthritis (OA-AID)

17 mei 2026 bijgewerkt door: Anne Therese Tveter, Diakonhjemmet Hospital

The primary aim of the trial is to assess if an information- and self-management app provided in the period between referral and consultation in specialist healthcare can improve knowledge about osteoarthritis and decision quality during consultation in patients with knee osteoarthritis.

204 patients will be randomized to either being on the waiting list for consultation, accessing publically available information about osteoarthritis (control group) or getting access to an 8-week information- and self-management intervention delivered through the Genus app prior to consultation.

Pasients with answer questionnaires at baseline, 4 weeks (intervention group only), 8 weeks, post consultation and 1 and 2 years after consultation.

The Genus app contains information videos, exercise videos, quizzes, feedback and questionnaires provided in a progressive order over an 8 week period.

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Studietype

Ingrijpend

Inschrijving (Geschat)

204

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.

Studiecontact

Studie Locaties

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

Nee

Beschrijving

Inclusion Criteria:

  • Men and women > 50 years referred to specialist healthcare for knee OA management

Exclusion Criteria:

  • Received joint replacement or are under consideration for revision in the referred joint
  • Have undergone joint replacement surgery in opposite knee
  • Have uncontrolled serious comorbidities
  • Have cognitive deficits
  • Are seeking care for recent knee trauma conditions (less than 6 months after trauma) or mainly psoriatic/rheumatoid arthritis
  • Unable to understand Norwegian
  • Do not possess a smartphone

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: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Intervention group
Getting access to an information- and self-management app in the waiting period from referral to consultation in specialist healthcare
Apparaat: Information- and self-management app
An information- and self-management intervention delivered through the Genus app, including information videos, exercise videos, questionnaires, quizzes and feedback provided over an 8 week period prior to consultation in specialist healthcare
Actieve vergelijker: Control group
Getting access to publicly available information in the waiting period from referral to consultation in specialist healthcare
Ander: Control
Information on where to access publically available information about knee osteoarthritis

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Knee Osteoathritis Knowlegde Scale (KOAKS)
Tijdsspanne: Baseline, 8 weeks, approx. 2-4 months after baseline (1 day after consultation (post consultation))
11 statements about osteoarthritis and treatment options, answered on a 5-point scale from 1 (=true) to 5 (=not true), summed up to a scale from 11 to 55
Baseline, 8 weeks, approx. 2-4 months after baseline (1 day after consultation (post consultation))
Decision Conflict Scale (DCS)
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
16 statements with 5 response categories about the patients uncertainty with treatment options. The total score range from 0 (no decisional conflict) to 100 (extreme decisional conflict). The DCS also has five subscales (all 0-100): 1) uncertainty, 2) informed, 3) values clarity, 4) support, and 5) effective decision.
approx. 2-4 months after baseline (1 day after consultation (post consultation))

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Concordance between preferences and treatment decision
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
Measured with one qustion form the Decision Conflict Scale (DSC), 5 response options.
approx. 2-4 months after baseline (1 day after consultation (post consultation))
Decisional quality
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
Measured with section 3 (decision process scale) in the Decision Quality Index for Knee Osteoarthritis (K-DQI) which consists of 5 questions. Four of these questions are summed to a 0-4 score with higher score indicating more shared decision-making.
approx. 2-4 months after baseline (1 day after consultation (post consultation))
Level of shared decision-making
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
Mesured with the CollaboRATE questionnaire, comprising 3 questions measured on a 0-9 scale, with a higher score indicating better experience. Scores are calculated using the top score method indicating the percentage of patients scoring top score for all three questions, or
approx. 2-4 months after baseline (1 day after consultation (post consultation))
Satisfaction with treatment choice
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
Measured on a numeric rating scale (0-10, with higher score indicating more satisfaction)
approx. 2-4 months after baseline (1 day after consultation (post consultation))

Andere uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Motivation for exercise
Tijdsspanne: Baseline, 4 weeks (only intervention group), 8 weeks
Measured on a numeric rating scale from 0 to 10 with higher score indicating higher motivation
Baseline, 4 weeks (only intervention group), 8 weeks
Motivation for surgery
Tijdsspanne: Baseline, 4 weeks (only intervention group), 8 weeks
Measured on a numeric rating scale from 0 to 10 with higher score indicating higher motivation
Baseline, 4 weeks (only intervention group), 8 weeks
Assessment of knee-related pain
Tijdsspanne: Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Measured with the Knee Injury and Osteoarthritis Outcome Score (pain section), comprising 9 questions scored on a 5-point scale and calculated to a 0-100 score with higher score indicating less pain
Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Assessment of knee-related function
Tijdsspanne: Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Measured with the Knee Injury and Osteoarthritis Outcome Score (function section), comprising 17 questions scored on a 5-point scale and calculated to a 0-100 score with higher score indicating less pain
Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Assessment of knee-related quality of life
Tijdsspanne: Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Measured with the Knee Injury and Osteoarthritis Outcome Score (quality of life section), comprising 4 questions scored on a 5-point scale and calculated to a 0-100 score with higher score indicating less pain
Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Health-related quality of life
Tijdsspanne: Baseline, 1 and 2 years
Mesured with EQ-5D-5L, comprising 5 questions with 5 response options. Summed to an utility index from 1 to 0, with 1 being best health-related quality of life. Additionally a visual analog scale from 0 to 100 with 100 indicating best health.
Baseline, 1 and 2 years
Level of shared decision-making therapist
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
Measured with 7 statements from the MAPPIN'SDM Therapist, measured on a 5-point scale
approx. 2-4 months after baseline (1 day after consultation (post consultation))
Preferred decision-making role
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
Measured with the Control Preference Scale, comprising a question with 5 statements about roles, corresponding to active role, collaborative role and passive role
approx. 2-4 months after baseline (1 day after consultation (post consultation))
Illness perception
Tijdsspanne: Baseline, 8 weeks
Measured with the Brief Illness Perception Questionnaire (B-IPQ) comprising 8 questions scored on a 0-10 scale, summed to a 0 to 80 score with higher score indicating poorer illness perception
Baseline, 8 weeks
Pain self-efficacy
Tijdsspanne: Baseline, 8 weeks
Measured with the Pain Self-Efficacy Questionnaire (PSEQ-2) comprising 2 questions about pain self-efficacy, answered on a 0 (not at all confident) to 6 (completely confident) scale.
Baseline, 8 weeks
Pain catastrophizing
Tijdsspanne: Baseline, 8 weeks
Measured with one question about consern about pain, measured on a 0 (not at all) to 4 (all the time) scale.
Baseline, 8 weeks
Pain intensity
Tijdsspanne: Baseline, 8 weeks
Measured with four questions from the Brief Pain Inventory, assessed on numeric rating scales from 0 (no pain) to 10 (worst possible pain).
Baseline, 8 weeks
Pain intensity now
Tijdsspanne: Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Measured with one question about pain intensity now on a numeric rating scale from 0 (no pain) to 10 (worst possible pain).
Baseline, 4 weeks (only intervention group), 8 weeks, 1 and 2 years
Disease activity
Tijdsspanne: Baseline, 8 weeks, 1 and 2 years
Measured with a numeric rating scale from 0 (no disease activity) to 10 (worst disease activity)
Baseline, 8 weeks, 1 and 2 years
Fatigue
Tijdsspanne: Baseline, 8 weeks, 1 and 2 years
Measured on a numeric rating scale from 0 (no fatigue) to 10 (worst possible fatigue)
Baseline, 8 weeks, 1 and 2 years
Importance of treatment options
Tijdsspanne: Baseline, 8 weeks
Measured with five questions from Dicision Quality Index for Knee Osteoarthritis (section 1). Assessed on numeric rating scales from 0 (not at all important) to 10 (extremely important)
Baseline, 8 weeks
Preferred treatment
Tijdsspanne: Baseline, 8 weeks
Measured with a question about if they prefer surgery or non-surgical treatment
Baseline, 8 weeks
Health literacy
Tijdsspanne: Baseline
Measured with the HLS19-Q12 comprising 12 questions about health literacy answered on a 4-point likert scale from 1 (very difficult) to 4 (very easy). Calculated as percentage (0-100) of items with valid responses that were answered with very easy or easy
Baseline
Self-efficacy of digital solutions
Tijdsspanne: Baseline
Measured with six questions about the self-efficacy of using different digital solutions (mobile phone, tablet, computer, apps, identification portal, helsenorge.no), assessed on a 6-point scale from never tried to manage very well
Baseline
Previous treatment
Tijdsspanne: Baseline
Assessment of previous treatment, answered with yes/no on questions related to previous physiotherapy treatment, previous osteoarthritis school,
Baseline
Health problems impact on daily living
Tijdsspanne: Baseline, 8 weeks, 1 and 2 years
Measured with one question from the Work Productivity and Activity Impairment questionnaire (WPAI) (question 6), anwered on a numeric rating scale from 0 (no effect on daily activities) to 10 (completely prevent from doing daily activities)
Baseline, 8 weeks, 1 and 2 years
Decision regret
Tijdsspanne: approx. 2-4 months after baseline (1 day after consultation (post consultation))
Measured with item 2 from the Decision regret scale, answered on a 5-point scale from totally agree to totally disagree
approx. 2-4 months after baseline (1 day after consultation (post consultation))
Use of pain medication
Tijdsspanne: Baseline, 8 weeks, 1 and 2 years
Assessed with an open-ended question about the use of pain medication last three months (type and dosage)
Baseline, 8 weeks, 1 and 2 years
Demographics
Tijdsspanne: Baseline
Measured with questions about gender, age, education level, working status, smoking, living arrangements, sosioeconomic status, and support
Baseline
Antropometrics
Tijdsspanne: Baseline
Measured as self-reported hight and weight
Baseline
Joint-spesific information
Tijdsspanne: Baseline
Measured with questions about most trouble some knee, duration of complaints, other joints with complaints
Baseline
Exercise level
Tijdsspanne: Baseline, 8 weeks, 1 and 2 years
Measured with one question about exercise level answered on a 5-point scale from do not exercise to exercise 3 or more times per week
Baseline, 8 weeks, 1 and 2 years
Comorbidities
Tijdsspanne: Baseline
Assessed with 15 questions about the presens of different diseases (yes/no)
Baseline
Usability of the app
Tijdsspanne: 8 weeks (only intervention group)
Measured with System Usability Scale (SUS) comprising 10 statements answered on a 5-point scale from strongly disagree to strongly agree, converted to a 0 to 100 score with higher score indicating better usability
8 weeks (only intervention group)
Satisfaction with the app
Tijdsspanne: 8 weeks (only the intervention group)
Measured with two questions about the satisfaction with the information videos and exercise videos in the app, answered on numeric rating scales from 0 (not statisfied) to 10 (very satisfied)
8 weeks (only the intervention group)
Suitability of the app
Tijdsspanne: 8 weeks (only the intervention group)
Measured with two questions about the suitability of providing information and exercises through an app, answered on numeric rating scales from 0 (not suitable) to 10 (very suitable)
8 weeks (only the intervention group)
Surgical treatment
Tijdsspanne: 1 and 2 years
Measured with a question about whether the patient has undergone surgical treatment (yes/no) and for those answering yes; five questions about the improvement/satisfaction with the surgical treatment, measured on a 5-point scale from very satisfied to very dissatisfied
1 and 2 years

Medewerkers en onderzoekers

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

Sponsor

Diakonhjemmet Hospital

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)

30 oktober 2025

Primaire voltooiing (Geschat)

1 oktober 2028

Studie voltooiing (Geschat)

31 december 2035

Studieregistratiedata

Eerst ingediend

11 december 2025

Eerst ingediend dat voldeed aan de QC-criteria

17 mei 2026

Eerst geplaatst (Werkelijk)

22 mei 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

22 mei 2026

Laatste update ingediend die voldeed aan QC-criteria

17 mei 2026

Laatst geverifieerd

1 mei 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • DS-00926
  • 938916 (Andere identificatie: Regional committees for medical and health research ethics (REK))
  • CIV-25-08-053975 (Andere identificatie: Eudamed CIV ID)

Plan Individuele Deelnemersgegevens (IPD)

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

NEE

Beschrijving IPD-plan

IPD will not be shared due to GDPR regulations

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 .

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