Randomized Controlled Trial of an Educational Intervention Using an Online Risk Calculator for Knee Osteoarthritis: Effect on Risk Perception
| Autor: | Griffin L. Michl, Elena Losina, Karen C. Smith, Jeffrey N. Katz |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male medicine.medical_specialty Osteoarthritis Risk Assessment Article law.invention 03 medical and health sciences 0302 clinical medicine Rheumatology Randomized controlled trial Patient Education as Topic law Risk Factors Intervention (counseling) Early Medical Intervention Medicine Humans 030212 general & internal medicine Risk factor Young adult 030203 arthritis & rheumatology Internet business.industry Osteoarthritis Knee medicine.disease Risk perception Treatment Outcome Calculator Physical therapy Lifetime risk Female Perception business |
| Zdroj: | Arthritis careresearch. 69(8) |
| ISSN: | 2151-4658 |
| Popis: | Objective: Young adults, in general, are not aware of their risk of knee osteoarthritis (OA). Understanding risk and risk factors is critical to knee OA prevention. We tested the efficacy of a personalized risk calculator on accuracy of knee OA risk perception and willingness to change behaviors associated with knee OA risk factors. Methods: We conducted a randomized controlled trial of 375 subjects recruited using Amazon Mechanical Turk. Subjects were randomized to either a) use a personalized risk calculator based on demographic and risk factor information (intervention) or b) view general OA risk information (control). At baseline and after the intervention, subjects estimated their 10-year and lifetime risk of knee OA and responded to contemplation ladders measuring willingness to change diet, exercise, or weight-control behaviors. Results: Subjects in both arms had an estimated 3.6% 10-year and 25.3% lifetime chance of developing symptomatic knee OA. Both arms greatly overestimated knee OA risk at baseline, estimating a 10-year risk of 26.1% and a lifetime risk of 47.8%. After the intervention, risk calculator subjects' perceived 10-year risk decreased by 12.9 percentage points to 12.5% and perceived lifetime risk decreased by 19.5 percentage points to 28.1%. Control subjects' perceived risks remained unchanged. Risk calculator subjects were more likely to move to an action stage on the exercise contemplation ladder (RR = 2.1). There was no difference between the groups for diet or weight-control ladders. Conclusions: The risk calculator is a useful intervention for knee OA education and may motivate some exercise-related behavioral change. This article is protected by copyright. All rights reserved. |
| Databáze: | OpenAIRE |
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