Classification of Global Functional Status in Rheumatoid Arthritis
Class I
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Completely able to perform usual activities of daily living (self-care, vocational, and avocational)
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Class II
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Able to perform usual self-care and vocational activities, but limited in avocational activities
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Class III
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Able to perform usual self-care activities, but limited in vocational and avocational activities
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Class IV
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Limited in ability to perform usual self-care, vocational, and avocational activities
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* Usual self-care activities include dressing, feeding, bathing, grooming, and toileting. Avocational (recreational and/or leisure) and vocational (work, school, homemaking) activities are patient-desired and age- and sex-specific.