Hi
gen tus=dateout-datein
gen tus=dateout-datein in 108/215
however heading for K-M curves other persones have done the "dirty job"
try
help sts
Best Lars
On Tue, 11 May 2004, Lisa Sharwood wrote:
> Hello and thank you for attending to my enquiry!!
> I am a very new Stata user and plowing through the user guide and
> reference manuals to try and perform a calculation.... and I need
> help please!
>
> I have two variables for which I have converted the list of dates
> into real elapsed dates. I want to subtract one from the other and
> thus generate a new variable with that figure.. which will give me
> the amount of time the person has stayed in the study. I have managed
> to
> 'compare' the two variables but only in one observation at a time.
> Could you please tell me how to do it for all the observations, and
> can I use 'in 108/215' for example.
> I hope this is understandable and I hope to hear from you soon. My
> ultimate aim is to perform Kaplan Mieir survival analysis on the data.
>
> Thank you
>
> Lisa Sharwood
> Research Officer
> Neurosciences Institute, Austin Health
> Melbourne University
> [email protected]
> *
> * 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/
>
..............................................
: Lars Korsholm Ph.D., :
: Department of Statistics :
: University of Southern Denmark :
: Sdr. Boulevard 23A, 2. :
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: Web http://www.biostat.sdu.dk/~korsholm :
:............................................:
*
* For searches and help try:
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