“…53,54,57,62 Across the 28 studies that reported on the age of enrolled participants (mean, median, or range), the median age of participants was 69 years. Most studies (17) were set in the US 25,26,38,41,46,47,[50][51][52][54][55][56]58,59,[61][62][63][64] ; others were set in Canada, 23,53 the UK, 33,57,60 Australia, 21,49 various European countries, 22,24,27,29,30,39,40,48 and Asia. 28,34 Six studies were rated as good quality 21,23,39,50,59,64 and the remainder as fair quality.…”