Friday, November 23, 2012

Stata Tutorial 3 is now up on

Stata Tutorial 3: insheet, append, use, sort, merge, outsheet. Here is the link to the youtube video:

The do file is available at:

and the log file is available at:



Anonymous said...

Are you able to please confirm my understanding of the postestimate "iccvar" command proceeding xtmixed.

I want to assess the correlation between two continuous variables (both serum markers) over three time points in a cohort of 50 patients.

I have used xtmixed to see if they are significantly correlated which they are but want to see how tightly. I then ran the iccvar command and the output gave me a value for ICC. I am wondering if this is the correlation coefficient between the two continuous variables? IF not can you suggest how I obtain this?

Shafique Jamal said...

Hello Megan,

Thanks for commenting. Sorry for the delay in replying - I saw this comment only now. I see that you have posted a question to the statalist and the answer is now in the statalist archives.