Evaluation of performance of the Still Activity Score for assessment of Adult-onset Still's Disease: Comparative study with Systemic Feature Score and Modified Pouchot-Activity Score.

Backgrounds: Adult-onset Still's Disease (AOSD) is a systemic inflammatory disorder. There is no definitive AOSD activity indicator. Two of the currently used disease activity scores are the Modified Pouchot Activity Score (mPoS), and Systemic Feature Score (SFS).