The CLASSIC study validated the performance of the 2009 ASAS classification criteria Model A was chosen for the revised criteria since it achieved prespecified performance targets of SN ≥75% and SP ≥90% 🔸Pso was included 🔸⬆️CRP replaced dactylitis #ACR25 @RheumNow Abs0854 https://t.co/tK52rQyaRa