TY - JOUR T1 - Methodological issues on analysis of prediction tools in evaluating febrile young infants at risk for serious infections JF - Emergency Medicine Journal JO - Emerg Med J SP - 175 LP - 175 DO - 10.1136/emermed-2019-209351 VL - 37 IS - 3 AU - Mehdi Naderi AU - Siamak Sabour Y1 - 2020/03/01 UR - http://emj.bmj.com/content/37/3/175.1.abstract N2 - Dear Editor,We read with great interest the EMJ article by Yao et al entitled ‘Analysis of emergency department prediction tools in evaluating febrile young infants at risk for serious infections (SIs)’ which was published in November 2019.1 The authors’ goals of conducting this study included: first, evaluation of the performance of two clinical tools including the National Institute for Health and Care Excellence (NICE) Traffic Light System and Severity Index Score in predicting SI in all febrile infants and second, to evaluate … ER -