However, the 2008 meeting in Zurich abandoned the simple versus complex terminology, although the participants did agree to keep the concept that most (80–90%) concussions resolve in a short period (7–10 days) and although the recovery time frame may be longer in children and adolescents.
Men mødet i 2008 i Zürich fraveg 'simpel versus kompleks'-terminologien, selv om deltagerne enedes om at beholde konceptet om at de fleste (80-90 %) hjernerystelser går over inden for kort tid (7-10 dage), selvom restitutionsperioden kan være længere hos børn og unge.