Fig. 1

Patient disposition. The flow chart shows the selection of patients for this study. A total of 82 patients were included in this study. Of the 82 patients in the safety analysis set, 17 continued treatment with abatacept from the clinical trial, and 65 were newly treated with abatacept. Among the 81 patients included in the effectiveness analysis set, 16 were continuing treatment with abatacept, and 65 were newly treated with abatacept