st: Query: How do I test trend across i.v. categories within logistic?

["N.Steggles" <n.steggles@public-health.ucl.ac.uk>]

I am using the following command on my data set, and now wish to 
test for linear trend across categories of townquin?

xi: logistic trier agey7 i.etnicwh i.townquin, cluster(school)

Which command do I need to add?

Thanks, Naomi


Naomi Steggles, PhD
Research Fellow HABIT study
Department of Epidemiology and Public Health
University College London,London, UK
Naomi@public-health.ucl.ac.uk
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