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To evaluate factors affecting the change of mood among rheumatic arthritis (RA) patients.Fifty-five patients who satisfied ACR criteria for RA were given modified AIMS (Arthritis Impact Measurement Scales) test twice with a 1 year interval (2000, 2001). We also asked patients to write the average mood during the previous month. The questionnaire was performed using Lorish's Face Scale (FS). A correlation analysis was undertaken to examine the association between changes of FS (ΔFS) from the first year examination to the second year examination, and changes of disease activity (CRP, number of affected joints), and each questionnaire item.Mean FS improved after 1 year. Patients of shorter therapy groups and younger patients showed larger improvement. Male patients showed larger improvement than female patients. ΔFS was strongly correlated with ΔCRP and Δnumber of affected joints. ΔFS were also strongly correlated with those of items which were related to activities of daily living (ADL). Especially, those related to the function of lower extremities showed stronger correlation with ΔFS than those related to functions of upper extremities. ΔFS among RA patients showed relatively weak correlation with Δpain factors as compare with ΔADL items.ΔADL is a larger influential factor on ΔFS than Δpain. Therefore, improvement of ΔADL seems to be one of the most important issues for the treatment of RA patients.