Scaling properties of pain intensity ratings in paediatric populations using the Faces Pain Scale-revised: Secondary analyses of published data based on the item response theory
The Faces Pain Scale-revised (FPS-r) has been developed as an interval scale. For other pain measurement instruments, several studies found evidence for and against an interval level of measurement.
Source: International Journal of Nursing Studies - Category: Nursing Authors: Alexander Avian, Brigitte Messerer, Andreas Frey, Winfried Meissner, Annelie Weinberg, William Ravekes, Andrea Berghold Source Type: research