st: dealing with 0 in cells in 2x2 tables

["Beynon, Caryl" <C.M.Beynon@ljmu.ac.uk>]

Thanks for your help. I seem to get a different output to yours - any suggestion why?
(Using exlogistic depvar indepvars)


. exlogistic spoonB_vis_writ homeless2

[iterations snipped]

Exact logistic regression����������������������� Number of obs =������ 163
������������������������������������������������ Model score�� =� 3.943866
������������������������������������������������ Pr >= score�� = ���0.0846
---------------------------------------------------------------------------
spoonB_vis~t | Odds Ratio������ Suff.� 2*Pr(Suff.)���� [95% Conf. Interval]
-------------+-------------------------------------------------------------
�� homeless2 |�� 5.628941*�������� 22����� 0.0645����� .9202888������ +Inf
---------------------------------------------------------------------------
(*) median unbiased estimates (MUE)


I actually want to model the joint effects of a number of independent variables (those significantly associated to the dependant variable in the bivariate analyses). I believe I need the terms() command. 

I typed:

. exlogistic spoonB_vis_writ inj_withwho2� ever_NEX2� evershared3 �sex_other_user2 homeless2, terms(t1= inj_withwho2� ever_NEX2� evershared3� sex_other_user2 homeless2)

And I got this message: 

note: P-values cannot be computed for the joint tests of the terms() option using the default method of sufficient statistics; to obtain p-values replay with either test(score) or test(probability)

Despite increasing my memory, there was insufficient to carry out the command - clearly because I am trying to model the joint effects of too many variables. 

Can anyone suggest how I derive a model which provides individual estimates for each variable, adjusted for the others, when I have this data?

Thanks


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