“…Among the population-based survey studies, thirty-one were conducted through online surveys only ( 17 , 18 , 20 , 22 , 23 , 25 , 26 , 28 – 31 , 35 , 42 , 43 , 45 , 48 – 54 , 57 – 62 , 66 , 68 , 74 ), one was an in-person interview ( 56 ), three were telephone interviews ( 10 , 21 , 38 ), and two were both in-person and online surveys ( 19 , 36 ). Among the included studies, usage status of the interventions, including TCM ( n = 22) ( 27 , 32 – 34 , 37 , 39 , 40 , 44 , 47 , 55 , 63 – 65 , 67 , 69 – 73 , 75 – 77 ), functional food (supplements) or herbs ( n = 20) ( 17 – 24 , 29 , 36 , 38 , 43 , 49 – 52 , 57 – 59 ), mind-body practice or spiritual practice ( n = 9) ( 28 , 35 , 42 , 45 , 48 , 54 , 60 , 61 , 74 ), Ayurveda ( n = 2) ( 10 , 41 ), homeopathy ( n = 1) ( ...…”