Table 1 Characteristics of participants

Age, years (average ± SD, range)

63.0 ± 8.7, 46–83

Female (n, %)

60 (77%)

BMI, kg/m² (average ± SD, range)

29.8 ± 6.4, 20.7–55.3

 Left knee

18 (23.1%)

 Right knee

19 (24.4%)

 Both knees

41 (52.6%)

 Less than 1 year

8 (10.3%)

 1 or 2 years

12 (15.4%)

 3 to 5 years

23 (29.5%)

 5 to 10 years

19 (24.4%)

 More than 10 years

16 (20.5%)

 Average pain over past week in most painful knee?

4.6 ± 1.9, 0–8

 Worst pain felt during activity over past week in most painful knee?

6.3 ± 1.8, 2–9

 Feeling understood and supported by healthcare providers (0–4)

3.0 ± 0.5

 Having sufficient information to manage my health (0–4)

2.8 ± 0.4

 Actively managing my health (0–4)

3.0 ± 0.4

 Social support for health (0–4)

2.9 ± 0.4

 Appraisal of health information (0–4)

3.0 ± 0.3

 Ability to actively engage with healthcare providers (0–5)

3.7 ± 0.6

 Navigating the healthcare system (0–5)

3.6 ± 0.5

 Ability to find good health information (0–5)

3.9 ± 0.5

 Understand health information well enough to know what to do (0–5)

4.1 ± 0.4

 Average score of 3 items, 0–10

7.5 ± 2.1, 2–10