I am studying the risk of small bowel cancer and carcinoid in a cohort
of patients with Crohn's disease. I have calculated SIR compared with
the genral population. I would also like to calculate and show
graphically the cumulated risk of small bowel cancer in the cohort (a
KM-plot) in comparison with the risk in the general population. Is it
possible to construct a KM-plot from the incidence rates from the age-
and period-bands? I am considering to create a "virtual matched
cohort" and calculate the cumulated risk from the age- and period-band
incidence rates for each virtual individual. Any hints on how this can
be done? Or are there any accepted methods for this kind of analyses?
Regards
Roland Andersson
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
