Analysis negative binomial regression

[Reem Hoteit]

Hello,

My outcome is absences per year in days( count) but since i have over dispersion, i will use negative binomial regression instead of poisson.
What is the code for doing bi-variate negative binomial reg analysis?

Thanks in advance,
Reem

[Carlo Lazzaro]

Reem:
see -help nbreg-.

[Reem Hoteit]

Can i write this code for bi-variate negative binomial regression for the 2 variables ( absence and participation( 3 categories))?

nbreg absence_per_year i.participation_cat

After finding all variables that have a p-value<0.2, i can include in the final model but first i need to bivariate analysis

[Cem Payaslioglu]

You may want to find and download the "bivcnto" procedure to run bi-variate negative regression as nbreg does not handle bi-variate case.

Note that it comes along with several options and some basic familiarity with copulas is warranted !