title: An update on the Bath Ankylosing Spondylitis Disease Activity and Functional Indices (BASDAI, BASFI): excellent Cronbach's alpha scores.
authors.affiliation: Royal National Hospital for Rheumatic Diseases, Bath, U.K.
authors.forename: S D
authors.initials: SD
authors.lastname: Jones
authors.forename: A
authors.initials: A
authors.lastname: Calin
authors.forename: A
authors.initials: A
authors.lastname: Steiner
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000503:physiopathology*