I'm interested to develop a mixed logit model for crash injury severity. My response variable is "injury severity" that is categorical with 3 levels (i.e. minor injury, serious injury, fatality). There are various explanatory variables but I would list few of them. Land use (urban, rural), lighting (day, evening, night), vehicle type (passenger car, light truck, heavy truck), speed limit, driver age, and vehicle age are the explanatory variables. "Land use", "lighting" and "vehicle type" are also categorical. There are more than 2000 observations.
I would be really grateful if I may be provided with the code for mixed logit model in STATA and how te create a dataset for a mixed logit severity model
Thank you.