Development and feasibility of a personalized, interactive risk calculator for knee osteoarthritis

BMC Musculoskeletal Disorders

Jeffrey N. Katz¹  Jamie E. Collins²  Griffin L. Michl³  Kristina Klara³  Elena Losina² 

[1] Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston 02115, MA, USA;Harvard Medical School, Boston 02115, MA, USA;Orthopaedic and Arthritis Center for Outcomes Research, Department of Orthopedic Surgery, Brigham and Women’s Hospital, 75 Francis St, BC 4-016, Boston, 02115, MA, USA

关键词: OA risk;    Risk calculator;    Knee OA;    Osteoarthritis;    Knee;   

Others  :  1232768
DOI  :  10.1186/s12891-015-0771-3

 received in 2015-07-09, accepted in 2015-10-02,  发布年份 2015

【 摘 要 】

Background

The incidence of knee osteoarthritis (OA) is rising. While several risk factors have been associated with the development of knee OA, this information is not readily accessible to those at risk for osteoarthritis. Risk calculators have been developed for several prevalent chronic conditions but not for OA. Using published evidence on established risk factors, we developed an interactive, personalized knee OA risk calculator (OA Risk C) and conducted a pilot study to evaluate its acceptability and feasibility.

Methods

We used the Osteoarthritis Policy (OAPol) Model, a validated, state-transition simulation of the natural history and management of OA, to generate data for OA Risk C. Risk estimates for calculator users were based on a set of demographic and clinical factors (age, sex, race/ethnicity, obesity) and select risk factors (family history of knee OA, occupational exposure, and history of knee injury). OA Risk C presents personalized risk of knee OA in several ways to maximize understanding among a wide range of users. We conducted a study of 45 subjects in a primary care setting to establish the feasibility and acceptability of the OA risk calculator. Pilot study participants were asked several questions regarding ease of use, clarity of presentation, and clarity of the graphical representation of their risk. These questions used a five-level agreement scale ranging from strongly disagree to strongly agree.

Results

OA Risk C depicts information about users’ risk of symptomatic knee OA in 5 year intervals. Study participants estimated their lifetime risk at 38 %, while their actual lifetime risk, as estimated by OA Risk C, was 25 %. Eighty-four percent of pilot study participants reported that OA Risk C was easy to understand, and 89 % agreed that the graphs depicting their risk were clear and comprehensible.

Conclusions

We have developed a personalized, computer-based OA risk calculator that is easy to use. OA Risk C may be utilized to estimate individuals’ knee OA risk and to deliver educational and behavioral interventions focused on osteoarthritis risk reduction.

【 授权许可】

   
2015 Losina et al.

【 图 表 】

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