RT Journal Article SR Electronic T1 Construction of an adaptable and specific severity score for prehospital emergencies JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 529 OP 531 DO 10.1136/emj.2007.047407 VO 26 IS 7 A1 Hubert, H A1 Guinhouya, C A1 Wiel, E A1 Vilhelm, C A1 Goldstein, P YR 2009 UL http://emj.bmj.com/content/26/7/529.abstract AB The aim of this study was to design a severity score specific to mobile emergency and resuscitation services (MERS). A prospective, multicentre cohort study including 17 868 patients was performed. The severity reference criterion was determined by multiple correspondence analysis. A multiple linear regression was used for the construction of the severity score. The score performances were analysed in terms of area under the receiver operating characteristics curves (AUC). Twelve variables were identified for the construction of the severity score. The multiple regression (r2  =  0.947; p<0.001) provided a severity score that took on values from 8 to 68. The score performs well in distinguishing the various patient outcomes in terms of AUC. This study develops the first adaptable and specific severity score of MERS activities.