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Percentage distribution of anamnestic (Ai) and clinical dysfunction indices (Di) by Helkimo in test subjects of the control group (group N, n = 30 subjects) and the group of patients with rheumatoid arthritis (group RA, n = 30 patients). Ai0 (subjectively symptom-free), AiI (mild symptoms), AiII (severe symptoms), Di0 (clinically symptom-free), DiI (mild symptoms), DiII (moderate symptoms), and DiIII (severe symptoms).
