I am not sure Ben Jann's excellent -mgof- (SSC) is able to do a
two-group comparison, but it might be useful to access an exact
Kolmogorov-Smirnov test applicable to categorical variables.
See also the packages cited in the help file for -mgof-.
T
On Wed, Jan 27, 2010 at 9:04 PM, Jen Zhen <[email protected]> wrote:
> Hi there,
>
> I have a summary table with members from (1) the treatment group and
> (2) the control group of an experiment, and would like to provide for
> each observable variable a formal test for whether the two sets of
> people come indeed from the same population. For the continuous normal
> variables, I am just doing a t-test to test for equality of means, but
> I'm not fully sure what to do instead for the categorical variables
> (with more than 2 categories).
>
> I found the -csgof- command for a Chi-Square test of whether the
> proportions of the different categories in one sample correspond to
> those coming from some hypothesis, but which command would you use to
> test whether the proportions in the two groups are identical?
>
> Thanks,
> J
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