title: Patient's global assessment of disease activity: what are we measuring?
authors.forename: Lilian H D
authors.initials: LH
authors.lastname: van Tuyl
authors.forename: Maarten
authors.initials: M
authors.lastname: Boers
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D010147:Pain Measurement; D010465:Perception; D012720:Severity of Illness Index