“… 29 , 31 , 34 , 37–48 , 50–58 Cost of device appeared 22/76 (29%) of the occurrences. 35 , 36 , 38 , 39 , 41–48 , 51 , 52 , 54–58 Must own a text-enabled cell phone 18 , 35–39 , 42 , 43 , 45 , 46 , 48 or a smart cell phone each occurred 11/76 (14%). 41 , 47 , 50–58 Manual entry of data discourages use of the app appeared 2/76 (3%) of the occurrences.…”