Positive Minds Strong Joints for Knee Osteoarthritis

Number of participants enrolled out of those screened

Proportion of participants who complete patient-reported outcome surveys at 10 week timepoint

Proportion of participants that attended at least 80% of intervention sessions

Custom 2-item (0-10 scale) to determine satisfaction with individual components of the intervention (i.e., Positive Minds, Strong Joints). There are 2 items and each item is scored separately. Higher scores for each item mean greater satisfaction for that dimension.

Custom survey asking the participants to provide feedback on a 5-point scale from very poor to excellent on various aspects of the intervention including content, interventionists, group aspects, overall rating, etc.

Patient-reported outcome for knee pain and disability; a score from 0 to 100, 0 representing extreme problems and 100 representing no problems.

9-item questionnaire assessing depression symptoms. Each question is scored from 0 to 3 where higher scores indicate higher frequency of experiencing depressive symptoms. Total score is the sum of individual item scores. Score range is 0-27. Higher total scores indicate greater severity of depression

It assesses anxiety symptoms. Each question is scored from 0 to 3 and the sum value of individual questions is the total score with range form 0-21. Higher total scores indicate greater severity of anxiety

It measures confidence in one's capacity to function despite pain. Scores range from 1 (very uncertain) to 10 (very certain). It has three subscales of pain, function, and other symptoms calculated as average of items contributing to that subscale. Higher scores indicate greater self-efficacy to manage osteoarthritis.

4-item questionnaire to determine how one's fear avoidance beliefs contributes to the cognitive/affective part of their knee pain. Each item is scored from 0 to 6. Total scores are summation of each item scores. Range is 0-24. Higher total scores indicate greater fear of physical activity

Questionnaire for a person's thought and feeling about pain. The questionnaire has 3 subscales namely rumination, magnification and helplessness. Each question is rated on a 5-point scale, from 0 (not at all) to 4 (always). It is scored by summing the ratings of its 13 items with a range of 0-52. Higher scores indicate greater pain catastrophizing tendencies in response to pain.

It assesses participants' trust in medical research. It includes items related to confidence in researchers, and the scientific process, rated on a 5 Likert scale (strongly disagree, disagree, neutral, agree and strongly agree) with a total score range of 0-48. Higher scores indicate greater trust in medical research

It measures perceived social support from family, friends, and significant others. It consists of 12 items rated on a 7- Likert scale for a total score range from 12-84. Higher scores indicate greater perceived social support across various domains.

It assesses physical activity levels across diverse populations. The responses are converted into MET (Metabolic Equivalent of Task) minutes per week. The results can be continuous or categorized. For the categorized results, individuals' physical activity categorized as low, moderate and high

It is used to measure measures perceived sleep quality, difficulty in sleep and having enough and refreshing sleep. The 8 questions are rated on a 5-point scale. The scores are summed together with a raw score of from 8 to 40. The raw scores are then converted to standardized T-scores using conversion tables.

This is a single item questionnaire with 15 options ranging from a very great deal worse to a very great deal better.

average rating of knee pain from 0-10, where 0 represents no pain and 10 represents worst pain imaginable, in the past week in a nominated activity selected at baseline

It assesses participant's assessment of impact of osteoarthritis on their general health on a 0-100 scale. 0 is very poor and 100 is very well.

This questionnaire is used to assess participants adhere to exercise. Participants document their engagement in unsupervised exercise throughout the week by noting minutes of exercise per day of the week

A known distance of20-28 meters divided by time taken to walk this distance in m/s

It assesses participants readiness to engage physical activity. It consists of five stages which include Precontemplation, contemplation, preparation, action and maintenance.