[R] logistic regression: differential importance of regressors

[Greg Trafton]

Hi, All.  I have a logistic regression model that I have run.  The
question came up:  which of these regressors is more important than
another?

(I'm using Design)

Logistic Regression Model

lrm(formula = iconicgesture ~ ST + SSP + magnitude + Condition + 
    Expertise, data = d)

          Coef    S.E.   Wald Z P     
Intercept -3.2688 0.2854 -11.45 0.0000
ST         2.0871 0.2730   7.64 0.0000
SSP        0.7454 0.3031   2.46 0.0139
magnitude -0.9905 0.6284  -1.58 0.1150
Condition  0.9506 0.2932   3.24 0.0012
Expertise  0.8508 0.2654   3.21 0.0013

The real question is that, since both ST and SSP load significantly
into the model, how do I show that ST has a bigger/smaller/similar
effect than SSP?

thanks in advance!
greg