Table 3: Predictors of DAS28 with PROs variables.  β * P
Patient SJC0.042<0.001 Patient TJC0.0090.49 RA duration0.0290.83
Education level0.1270.35  PROs: patient reported outcomes; β:
beta coefficient; P: P value; RAPID: routine assessment of
patient index data; SJC: swollen joint count; TJC: tender joint
count; RA: rheumatoid arthritis. *The beta coefficients give a
measure of the contribution of each variable to the model. A
large value indicates that a unit change in this predictor
variable has a large effect on the criterion variable (DAS28).