Fig. 2

Variability in potential response outcomes. a Distribution of within-patient error from the mixed model using different outcome metrics. b Pairwise Pearson correlation between potential outcome measurements using different metrics and follow-up visits. DAS Disease Activity Score, FL difference between first and last measurements, lCRP log transform of C-reactive protein metric, rSJC square root of swollen joint count, rTJC square root of tender joint count, St.Dev. standard deviation