Table 2. Results of multivariate regression analysis: results of variable analysis included in the model.

Variables in the equation
								95.0%CI for exp(B)
		B	SE	Wald	df	Sig.	Exp(B)	Lower	Upper
Step 1	X4=Stage	1.049	0.154	46.482	1	0.000	2.854	2.111	3.859
Step 2	X2=Age	0.020	0.010	4.113	1	0.043	1.021	1.001	1.041
	X4=Stage	1.097	0.155	49.917	1	0.000	2.996	2.210	4.062
Step3	X1=LUM	0.635	0.293	4.691	1	0.030	1.887	1.062	3.351
	X2=Age	0.025	0.010	5.889	1	0.015	1.025	1.005	1.046
	X4=Stage	1.158	0.168	47.692	1	0.000	3.183	2.292	4.421