RE: st: different age effect between groups

[Enzo Coviello <enzo.coviello@alice.it>]

Hi,

I would like to thank Svend and Maarten for their very useful advice 
about how to model the interaction effect between age and invited to 
screening test.
The Svend's advice is, as usual, exemplarily clear, the Maarten's one 
is more sophisticated but substantially coincident.

The finding that the screening test increases its effect with age is 
important even if already documented. I will not miss to note that it 
exists in the Italian screening data set too.

Thanks again
Enzo

^^^^^^^^^^^^^^^^
Enzo Coviello
Dipartimento Prevenzione ASL BAT/1
Ufficio Igiene Pubblica
via Barbera 27 - 70055 MINERVINO MURGE (BA)
Italy
tel. fax +39 0883 691053
tel (home) +39 0883 695055
mobile 347 5016016  
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