There are multiple definitions:

1. Assessment of SpondyloArthritis international Society(English)

   • patients are sub-grouped into (1) a predominantly axial disease, termed axial SpA including AS and non-radiographic axial SpA; (2) peripheral SpA
   • AS, IBD, PSO, SpA
   • Organizations (international), Rheumatology, Autoimmunity
   • https://www.asas-group.org/

2. Appraisal of Self-Care Agency Scale(English)

   • PAM, ASAS-R
   • Scoring systems/scales, Disability
   • https://doi.org…lthcare10091785