Matched case-control study analysis

[[email protected]]

Hi, this may be very basic. I'm currently doing analysis on a 1:2 matched case control study using conditional logistic regression (clogit). I have a few exposures/risk factors I want to analyse and get an odds ratio for that have more than two categories. (e.g. 1<11mL , 11-100mL, <100mL which have all been assigned unique codes 0,1,2)

I know that for a unmatched uni-variable analysis you can use the command tabodds to get a tabulated odds ratio for each exposure level however I do not know how to do this in a 1:2 matched case control study using conditional logistic regression. Any help would be greatly appreciated!

[Svend Juul]

The three-category variable is an exposure, not the outcome, right? Look at this example from the manual:

webuse lowbirth2.dta , clear
clogit low smoke i.race , group(pairid) or