Methods	Sampling frame: purposely selected from list of participants in RCT intervention arm of study. Data collection: in depth interviews. Data analysis: constant comparative/thematic analysis.
Stated aim of study	To understand reasons for compliance and non‐compliance with a home‐based exercise regimen by people with osteoarthritis of the knee.
Details of participants	Country: UK. Sample number: 20. Age: ≥ 45 years. Gender: mixed. SES: not stated. Occupation/employment: not stated.
Details of exercise programme	Provider(s): physiotherapists Training: not stated Setting: home‐based Content: strengthening of the vastus medialis component of the quadriceps muscle, medial taping of the patella; advice and information leaflets. Length/intensity: 8 weeks; 9 sessions; 30‐minute duration; and encouraged to continue with the exercises and taping at home. Comparator: general advice about weight reduction and exercise at a single visit.
Notes
Quality appraisal
Questions used to judge the dependability and credibility of studies		Review authors' judgements
Were steps taken to increase rigour in sampling?		A thorough attempt.
Were steps taken to increase rigour in data collection?		Several steps.
Were steps taken to increase rigour in data analysis?		Several steps.
Were the findings of the study grounded/supported by data?		Fairly well grounded/supported.
What was the breadth and depth of findings?		Good/fair depth, but limited breadth.
To what extent does the study privilege the perspectives and experiences of older people with osteoarthritis of the knee or hip?		A lot.
Overall dependability and credibility of findings		Review authors' judgements
Dependability of findings		High.
Credibility of findings		Medium.