Fig. 3

Decision-curve analysis. BT body temperature. The net-benefit of 5A score is higher than age, BT, “all treatment strategy” and “none” in almost all range of threshold probability. All treatment strategy is a concept of treatment policy in decision-curve analysis, which describes the net-benefit if all the patients are managed as test positive regardless of the prediction. None is also a treatment policy which describes the net-benefit if all the patients are managed as test negative regardless of the prediction