Table 2.

Relationships between the DAS28 and its individual score components and the DAS28-P^*

	DAS28
DAS28-P	0.34 (0.28–0.40)
TJC	0.83 (0.81–0.85)
SJC	0.72 (0.69–0.75)
ESR	0.62 (0.58–0.66)
VAS GH	0.66 (0.63–0.70)

^*Spearman's correlation coefficients (95% confidence intervals) with the Disease Activity Score in 28 joints (DAS28) show the proportion of the DAS28 attributable to patient-reported components (DAS28-P) and individual components of the DAS28. The DAS28-P shows less dependence upon the DAS28 than the individual components. P < 0.01 for all components. TJC = tender joint count; SJC = swollen joint count; ESR = erythrocyte sedimentation rate; VAS = visual analog scale; GH = general health.