TABLE 1.

Proposed key search terms.

Variables	Key concepts
	Knee osteoarthritis	Total knee arthroplasty	Profile
Free text terms/natural language terms	‘[K]nee osteoarthritis’; ‘knee OA’; KOA; arthritis; ‘osteoarthritis*’	‘[T]otal knee arthroplasty’; TKA; ‘Total joint arthroplasty’; TJA; TJR; TKR; arthroplasty; ‘knee replacement’	Profile*; demographic*; characteristic*; quality of life; epidemiology*; prevalence; ‘waiting list*’
Controlled vocabulary terms/subject terms	Knee osteoarthritis [MeSH]; ‘osteoarthritis’ [MeSH]; ‘Osteoarthritis, Knee/statistics and numerical data’ [Mesh]; ‘Osteoarthritis, Knee/surgery’ [Mesh]	Arthroplasty [MeSH]; ‘Arthroplasty, Replacement, Knee’ [Mesh]; ‘total knee Arthroplasty’ [MeSH];	‘Quality of Life’ [Mesh]

TKR, Total knee replacement.