“…In 19 of 27 studies, the CPR was introduced as a stand-alone tool [20, 23, 24, 26–34, 36, 38, 39, 41, 43–45]. The diagnostic CPRs and strategies tested were directive in 25 of the 27 studies, making a recommendation regarding treatment or disposition in 10 studies [19, 24, 27, 30, 31, 37, 40, 41, 44, 45], further diagnostic testing in 8 studies [23, 26, 29, 35, 36, 38, 39, 43] and both further testing and treatment in 7 studies [18, 25, 28, 32–34, 46].…”