Assessing fit for non-nested models using clogit in survival package

I am analyzing a 1-to-2 matched case-control study using clogit in the
survival package. I am interested in comparing and assessing fit of
non-nested models. I don't want to program all the diagnostics
described in Hosmer/Lemeshow (2000). Can someone proficient with clogit
and assessing fit for non-nested models point me in the right
direction.

Many thanks!
Tomas


Tomas Aragon, MD, DrPH
Tel: 510-847-9139 (mobile)
URL: http://www.idready.org