“…Twenty-one studies (67 %) used qualitative methods only [ 39 – 41 , 48 , 49 , 51 , 52 , 55 – 57 , 59 – 69 ], two (7 %) used quantitative methods only [ 46 , 47 ], and eight (26 %) used mixed methods [ 42 – 45 , 53 , 54 , 58 , 59 ]. Qualitative data were collected using semi-structured interviews in 24 studies [ 39 , 40 , 42 , 43 , 45 , 49 – 53 , 55 – 58 , 60 – 69 ], document analysis ( n = 15 [ 42 , 49 , 51 , 52 , 55 – 57 , 60 – 66 , 68 ]), focus groups ( n = 9 [ 39 , 40 , 43 , 45 , 48 – 50 , 53 , 58 ]), participant observation ( n = 6 [ 42 , 43 , 53 , 54 , 58 , 69 ]) and photovoice [ 70 ] ( n = 2 [ 50 , 53 ]).…”