Yes, they may occur in the data. Quantitative and qualitative assessments of joint swelling and tenderness are found within the JOINT_EXAM and JOINT_EXAM_DETAILS tables, respectively. The joint count may be described in multiple formats including a 28 joint count for swelling and tenderness (variables ‘SJC_OBSERVED_28’ and ‘TJC_OBSERVED_28’) and a total joint count for swelling and tenderness (variables ‘SJC_OBSERVED’ and ‘TJC_OBSERVED’) that includes joints evaluations of 28, 42, 44, or 76 joints. The total number of evaluated joints (e.g, swollen, tender, or normal/not affected) may not be included/known. Availability of the Joint Exam tables depends on the dataset.