Table 2.

Relationship between change in disease activity variables and change in red blood cell polyglutamate concentrations.

	Disease Activity Variable	Spearman’s Rho	p
MTXGlu₁	SJC	−0.02	0.91
	TJC	0.18	0.38
	DAS28	−0.06	0.77
MTXGlu₂	SJC	0.048	0.82
	TJC	0.26	0.21
	DAS28	0.12	0.55
MTXGlu₃	SJC	0.009	0.97
	TJC	0.22	0.27
	DAS28	−0.13	0.52
MYXGlu₄	SJC	−0.21	0.31
	TJC	−0.19	0.35
	DAS28	−0.38	0.056
MTXGlu₅	SJC	−0.25	0.22
	TJC	−0.46	0.019
	DAS28	−0.25	0.035
MTXGlu_3–5	SJC	−0.20	0.33
	TJC	−0.15	0.46
	DAS28	−0.42	0.032
MTXGlu_1–5	SJC	−0.15	0.48
	TJC	−0.048	0.82
	DAS28	−0.32	0.11

MTXGlu_n: methotrexate polyglutamate; DAS28: 28-joint Disease Activity Score.