Dear all
I sent this before but got no response. I have revised it.
I want to estimate the sample size needed to detect an disease that
occurs in 1 out of 1000 people (as an example). The alternate
state is absence of disease which would occur in 999 of 1000 people on
average. The problem is that I get numbers but I don't know if they
are the
right ones. Can I use sampsi grp1 being those with disease and Grp2
being
those without disease. Or do I use sampsi 0.001, onesample as in:
sampsi 0.001 0, p(0.8) onesample
I need help and thank in advance those that provide it.
Donald Spady
Dep't of Pediatrics, University of Alberta
(780) 407-1244
Nature has no reset button.
Donald Spady
Dep't of Pediatrics, University of Alberta
(780) 407-1244
Nature has no reset button.
*
* 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/
