“…This was demonstrated, e.g., by the field research conducted in countries including England, France, Croatia, Czech Republic, Romania, Slovakia, Lithuania, and Latvia, as well as in a further comparative study with the WHOQOLBref involving samples from Australia, Spain, Brazil, Israel, Russia, and the United States. 6,25 Germany, Portugal, New Zealand, and Italy also validated the EUROHIS-QOL 8-item index for use with their populations. [8][9][10][11] The reliability (internal consistency) of the EUROHIS-QOL 8-item, as measured by Cronbach's alpha coefficient, was shown to be excellent, with a total value of 0.81 and no need to exclude any item.…”