1. FRI0648 Directly comparing latent functional ability in adolescents with jia using the chaq and haq: an item response theory analysis. (12th June 2018) Authors: Shoop-Worrall, S. J. W.; Voshaar, M. O.; van de Laar, M.; Thomson, W.; Hyrich, K. L.; McDonagh, J. E.; Verstappen, S. M. M. Journal: Annals of the rheumatic diseases Issue: Volume 77(2018)Supplement 2 Page Start: 845 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗