Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: R: Minimal Detectable Difference


From   <carlo.lazzaro@tiscalinet.it>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: R: Minimal Detectable Difference
Date   Tue, 5 Jun 2012 14:06:45 +0200


Lars can probably simulate some scenarios with -sampsi-. I find this
approach particularly useful when the limited number of participants
available is due to budget constraints (as it is often the case, sadly).
Kindest Regards,
Carlo


-----Messaggio originale-----
Da: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Per conto di Lars Folkestad
Inviato: martedì 5 giugno 2012 13:39
A: statalist@hsphsun2.harvard.edu
Oggetto: st: Minimal Detectable Difference

Dear List

This might be a bit more of a stats question than a stata question.

I am about to do a cross sectional study comparing two groups regarding a
measured continous variable.
I know the the variance of the measurement. No one has ever investigated
these groups before using this or similar machines. For practical reasons i
only have a limited number of participants available for this project. I am
now wondering what the minimal detectable difference between the two groups
are with the number of participants i have available.

I will use a t-test (paired, seeing the two groups are matched)

How do i calculate this using stata?

lars

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index