“…Ten studies measured the perceived environment through various questionnaires [ 25 , 39 , 41 , 45 , 46 , 49 – 51 , 55 , 56 ] and four studies measured both objective and perceived environment [ 25 , 45 , 46 , 56 ]. Socioeconomic position was most frequently measured using a composite index [ 22 – 26 , 30 , 39 , 41 , 46 , 55 , 57 ], followed by income [ 27 – 29 , 43 , 45 , 47 , 49 , 50 , 52 – 54 , 56 ], education [ 40 , 42 , 44 , 48 ] and occupation [ 51 ]. Fourteen studies measured SEP at the area-level [ 22 – 26 , 29 , 30 , 39 , 41 , 43 , 49 , 52 , 57 ], while fifteen measured SEP at the individual level [ 27 , 28 , 40 , 42 , 44 – 48 , 50 , 51 , 53 – 56 ].…”