“…Health-related quality of life (HRQoL) was assessed through the 36-Item Short Form Survey (SF-36), Short-Form 12 (SF-12), Dermatology life Quality Index (DLQI), Euro-Qol 5 domain (EQ-5D), Psoriatic Arthritis Quality of Life (PsAQoL) and/or Ankylosing spondylitis quality of life score(ASQoL). (5,13,17,23,24) Then, we collected the domains considered important in the core set, i.e., economic cost, emotional well-being, participation (work, leisure and social activities) and structural damage. Finally, other outcomes of importance to patients and included in the OMERACT research agenda, were collected, i.e., independence, sleep, stiffness and treatment burden.…”