我的logistic模型作出来相关性不错，但是模型整体拟合优度很差，请大家指点指点我，该怎么办？

Omnibus Tests of Model Coefficients
Chi-square df Sig.
Step 1 Step 12.230 1 .000
Block 12.230 1 .000
Model 12.230 1 .000
Step 2 Step 5.771 1 .016
Block 18.001 2 .000
Model 18.001 2 .000
Step 3 Step 4.255 1 .039
Block 22.256 3 .000
Model 22.256 3 .000
Step 4 Step 4.049 1 .044
Block 26.305 4 .000
Model 26.305 4 .000

Model Summary
Step -2 Log likelihood Cox & Snell R Square Nagelkerke R Square
1 583.540 .011 .026
2 577.769 .016 .038
3 573.514 .019 .047
4 569.465 .023 .056

Hosmer and Lemeshow Test
Step Chi-square df Sig.
3 .031 1 .859
4 .128 3 .988

Variables in the Equation
B S.E. Wald df Sig. Exp(B) 95.0% C.I.for EXP(B)

Lower Upper
Step 4 X2(1) .494 .233 4.511 1 .034 1.640 1.039 2.588
X3(1) 721 .340 4.487 1 .034 2.057 1.055 4.009
X6(1) 1.056 .312 11.472 1 .001 2.874 1.560 5.293
X10(1) -.491 .249 3.886 1 .049 .612 .376 .997
Constant -2.775 .191 210.515 1 .000 .062
a Variable(s) entered on step 1: X6.
b Variable(s) entered on step 2: X3.
c Variable(s) entered on step 3: X2.
d Variable(s) entered on step 4: X10.

[此贴子已经被作者于2006-5-29 14:33:48编辑过]

大家救救我啊！！！帮我引条明路。

楼上的说话还挺冲，这里是学习交流的地方，我是不懂才问的，说话也太过了吧，这种话就省省吧！

[此贴子已经被作者于2006-5-30 14:29:31编辑过]