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Within-panel comparisons (panel A and B) of US and DAS28(CRP) endpoint responsiveness. Effect size and 90% CI are presented. Power Doppler measures: PDA: Power Doppler Area; continuous measure of PD signal within the synovium; VASCi: Vascular Index (0 to 4 scale). Gray scale US measure of synovial swelling: STA: Synovial Thickness Area; area bounded by synovium; STi: Synovial Thickness Index (0 to 4 scale). * Significant effect: P <0.05. CI, confidence interval.
