Increased Serum Interleukin-2 Levels Are Associated with Abnormal Peripheral Blood Natural Killer Cell Levels in Patients with Active Rheumatoid Arthritis

Table 3

Multiple linear regression analysis of DAS28 score and cytokines in patients with RA.

	B	SE
Constant	2.874	0.162		17.724	<0.001
IL-2	0.020	0.010	0.237	2.059	0.042
IL-4	-0.003	0.020	-0.107	-0.103	0.897
IL-6	0.002	0.001	0.196	2.044	0.044
INF-γ	0.009	0.007	0.154	1.357	0.178

Statistics: Multiple linear regression analysis. Abbreviations: IL-2: interleukin-2; IL-4: interleukin-4; IL-6: interleukin-6; IL-10: interleukin-10; INF-γ: interferon-γ; TNF-α: tumor necrosis factor-α.