Hello:
I have a continuous variable that I would like to convert to interquartile ranges. Is there a specific way to do it? Or do I use summarize to find the IQR values and generate/label/recode?
Ralph
Hi Ralph - Check out this website.
http://stackoverflow.com/questions/13029266/how-to-split-a-sample-according-to-a-certain-variable-in-stata
Ralph,
There is an egen command that allows you to create quartiles (four groups containing 25% of the population in each)- the interquartile range is the range between the 25th percentile and the 75th percentile...
egen newvar = cut(var), group(4)
This egen command will categorize your variable into four groups (values of 0-3). For more information on this you can enter help egen in stata and it will take you to the help window. You can use this same command to create tertiles or quintiles or any other grouping, just specify the number of groups you want to create after the "group" option.
Hope this helps!
Sofia
THanks everyone - it totally worked!
Ralph