There are substantial differences in laboratory testing, with the rheumatologist-managed patients who are more likely to have labs performed than the dermatologist-managed patients. You will find this in the proportion of patients with any lab results available. For example, in PsA it is >85%, whereas in PsO it is <25%.
For elements of the joint exam other than joint count (e.g., range of motion), these variables are from an EMR interface used by some Rheumatologists. They use the fields they find useful in clinical practice so you will see variability depending on the field (i.e., even for a given patient you may not see a[…]
For disease activity measures, it is dependent on clinician behavior, but in general we see more CDAI and RAPID-3/MDHAQ used by the Rheumatologists, compared to DAS28 and SDAI. Not all patients have DA measures available.
Yes, that is the correct interpretation.
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[…]
