“…Although included studies focused on a variety of illness presentations, asthma ( n = 20) was the most common [27, 29, 39, 42, 46, 61, 62, 65, 67, 70, 75, 77, 79–83, 85, 89, 90]. Other common illnesses were minor head injury ( n = 12) [30, 34, 36, 44, 48, 50, 51, 56, 58, 68, 86, 94] and fever ( n = 9) [35, 46, 64, 67, 68, 71, 72, 78, 88]. Outcomes varied across included studies but primarily involved improving parent adherence with discharge instructions or follow-up appointments ( n = 12) [60, 61, 66, 75, 77, 81–85, 90, 93], improving parent knowledge of illness treatment ( n = 7) [63, 65, 67, 68, 70–72], and reducing unnecessary return ED visits ( n = 5) [62, 64, 69, 88, 89].…”