“…Table 2 shows the control group protocols for each article. Fourteen of them [ 14 , 18 , 39 , 44 , 48 , 49 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 ] did not include a control group, while the design of remaining six studies [ 32 , 45 , 46 , 47 , 50 , 51 ] did. In this regard, treatment as usual or activities without dog presence were the most usual protocols for control groups.…”