Table 3.

Parameters of logistic regression analysis and tests

Variable	β^	SE (β^)	Wald x2	P	OR^=exp (β^)
Constant term	-1.492	0.462	10.42	0.001
X1	-1.917	3.301	0.34	0.561	0.147
X2	1.498	1.563	0.92	0.338	4.473
X3	0.589	1.351	0.19	0.663	1.802
X4	-1.046	3.158	0.11	0.741	0.351
N1	1.674	1.415	1.4	0.237	5.332
N2	4.083	1.179	11.98	0.001*	59.308
N3	4.846	2.246	4.65	0.031*	127.202
N4	-2.889	2.300	1.58	0.209	0.056

^* P<0.05 indicated statistical significance.

X₁, X₂, X₃ and X₄ stands for serum IL-1β, IL-6, IL-8 and IFN-γ; N₁, N₂, N₃ and N₄ stands for GSF IL-1β, IL-6, IL-8 and IFN-γ.