Recruitment and screening
KOA
RECRUITMENT
Recruitment and screening took place from October 2018 to June 2019. Participants were recruited from the community local and social media advertisements. All potential participants were pre-screened via telephone followed by face-to-face screening, during which a detailed explanation of the project was given and written informed consent was obtained. Participants were eligible if they were aged 45 years or over, met the American College of Rheumatology (ACR) criteria for KOA [