Because the Glasgow Coma Scale (GCS) is widely regarded as complex and has previously shown poor inter-rater reliability, David O. Thompson, MD, MPH, of the University of Colorado in Denver and colleagues suggested online in Annals of Emergency Medicine that the Simplified Motor Score (SMS) could be used in its place in future research studies.

http://www.medpagetoday.com/CriticalCare/GeneralCriticalCare/27836