“…Six articles also reported a range of participant observations of three or more [ 34 , 36 , 47 , 51 , 65 , 67 ]. The remaining articles either confirmed that all participants were observed at all time points [ 13 , 28 , 30 , 33 , 35 , 46 , 56 , 58 , 59 , 64 , 66 ], or the number of participant observations was not stated [ 29 , 31 , 32 , 37 , 42 , 48 , 49 , 57 ].…”