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...models. I've searched through the archive and the only thing I found was that I could use 'boot()' function. but it's not clear to me how I can do this. Has anyone done it? I would very much appreciate your help, kelly ------------------------------------------------------------- KyungAh (Kelly) Im Epidemiology Data Center Graduate School of Public Health Department of Epidemiology University of Pittsburgh PA 15261 PHONE:(412) 624- 4612 FAX: (412) 624- 3775 Email: Im@edc.pitt.edu http://www.edc.gsph.pitt.edu [[alternative HTML version deleted]]

...ansition rates to be able to say that they are not equal statistically. (I guess I might be thinking too hard on this, can I just use qratio.msm function and examine confidence intervals..?) but I would very much appreciate any advice, kind regards, kelly ++++++++++++++++++++++++++++++++++++ KyungAh (Kelly) Im, M.S/PhD student. University of Pittsburgh PHONE:(412) 624- 4612 FAX: (412) 624- 3775 Email: Im@edc.pitt.edu http://www.edc.gsph.pitt.edu ++++++++++++++++++++++++++++++++++++ [[alternative HTML version deleted]]

...1033 0 18 4 1 20 I'm wondering if I can ignore this warning message or should I have not done resampling with replacement. Any input would be greatly appreciated. Thank you so much for your time, kelly ------------------------------------------------------------- KyungAh (Kelly) Im Epidemiology Data Center Graduate School of Public Health Department of Epidemiology University of Pittsburgh PA 15261 PHONE:(412) 624- 4612 FAX: (412) 624- 3775 Email: Im at edc.pitt.edu http://www.edc.gsph.pitt.edu