Hello, We have used WinBugs successfully (and with great satisfaction) for estimating hierarchical linear models for longitudinal data analysis in which every Level 1 unit had the same number of observations. Now we face a data analysis in which the Level 1 units have different numbers of observations (some including only one). But how we do this with WinBugs currently stumps us. We would be most grateful for any suggestions. Many thanks. Sincerely, --------------------------------------------------------------------- Dr. Jie Chen, Statistician Department of Computing Services Umass Boston, 100 Morrissey Boulevard, MA 02125 (617) 287 5241 [log in to unmask] http://www.cc.umb.edu/grc/ABOUT/STAFF/jie/Jieshomepage.html ---------------------------------------------------------------------- ------------------------------------------------------------------- This list is for discussion of modelling issues and the BUGS software. For help with crashes and error messages, first mail [log in to unmask] To mail the BUGS list, mail to [log in to unmask] Before mailing, please check the archive at www.jiscmail.ac.uk/lists/bugs.html Please do not mail attachments to the list. To leave the BUGS list, send LEAVE BUGS to [log in to unmask] If this fails, mail [log in to unmask], NOT the whole list