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Completed

NCT Number: NCT02704286

Risk and Risk Perception of Knee Osteoarthritis in the US

The investigators have created an interactive knee osteoarthritis (OA) risk calculator that estimates a user's risk of developing symptomatic knee OA as well as the user's risk for undergoing a total knee replacement (TKR) within their lifetime. To test the impact of the calculator, the investigators recruited OA-free subjects from Amazon's Mechanical Turk. Participants were randomized to either access general information about OA or use the risk calculator in addition to accessing general OA information. The investigators hypothesized that participants randomized to the risk calculator arm would have more accurate perception of their knee OA risk and would have increased willingness to change risky behavior compared to the general OA information group.

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Key information

Conditions

Knee Osteoarthritis Arthritis Joint Diseases Musculoskeletal Diseases Osteoarthritis Osteoarthritis, Knee Rheumatic Diseases

Age range

25 year–45 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Participants must be between the ages of 25 and 45
  • Participants must live in the United States
  • Participants must not be diagnosed with osteoarthritis

Exclusion criteria

  • All participants who did not meet the inclusion criteria

Treatment and study plan

Internet-Based Osteoarthritis Risk Calculator

Behavioral

The investigators have developed a personalized risk calculator for knee osteoarthritis. This risk calculator uses the Osteoarthritis Policy Model to estimate an individual's risk of developing knee osteoarthritis within their lifetime based on demographic information and risk factors. It shows this information to the user with interactive graphs and compares their risk to the risk of an average American of the same age.

Generic osteoarthritis information

Behavioral

Subjects viewed generic (i.e. not personalized) information about osteoarthritis risk factors

Primary outcomes

  1. Change in estimated lifetime knee OA risk

    Time frame: 1 day

    The difference between average lifetime knee osteoarthritis risk estimated by participants at baseline and average lifetime knee osteoarthritis risk estimated by participants after the intervention.

  2. Change in estimated 10-year knee OA risk

    Time frame: 1 day

    The difference between average 10-year knee osteoarthritis risk estimated by participants at baseline and average 10-year knee osteoarthritis risk estimated by participants after the intervention.

Secondary outcomes

  1. Reaching an Action Stage on Diet Contemplation Ladder

    Time frame: 1 day

    The percentage of subjects who originally ranked themselves below an action stage (8 or higher) on a contemplation ladder for changing diet related behaviors and who moved to an action stage after the intervention.

  2. Reaching an Action Stage on Exercise Contemplation Ladder

    Time frame: 1 day

    The percentage of subjects who originally ranked themselves below an action stage (8 or higher) on a contemplation ladder for changing exercise related behaviors and who moved to an action stage after the intervention.

  3. Reaching an Action Stage on Weight Control Contemplation Ladder

    Time frame: 1 day

    The percentage of subjects who originally ranked themselves below an action stage (8 or higher) on a contemplation ladder for changing weight control behaviors and who moved to an action stage after the intervention.

Sponsors and collaborators

Lead sponsor

Brigham and Women's Hospital

Other

Registry information

Official study title

Raising Awareness of Knee Osteoarthritis (OA) and Willingness to Undertake Behavioral Changes to Reduce Risk of Knee OA: Online Recruitment

Important dates

Study start
2015
Primary completion
2015
Study completion
2015
First posted
Mar 10, 2016
Registry last updated
Mar 10, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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