“…Intervention characteristics and descriptions of the studies included in this review are summarized in Table 1 and Table 2 , respectively. Of the 21 papers, 17 (81%) were RCTs and 4 (19%) were non-RCTs, with study locations in China [ 25 , 37 - 39 , 48 ], Hong Kong [ 34 ], India [ 26 , 31 ], Japan [ 35 ], Singapore [ 30 ], South Korea [ 27 - 29 , 32 , 33 , 36 , 40 , 50 ], Taiwan [ 41 , 49 ], and the United States [ 47 ]. The total number of participants across the 21 studies was 21,173 (RCTs: 4090 and non-RCTs: 17,083), with a mean age of 45.9 (SD 9.84, range 25.8-60.5) years; on average, 45.1% (SD 20.1) of the participants were women.…”