. centile d, centile(33 66)
. reg y a b c if d<=r(c_1)
. reg y a b c if d>r(c_1)&d<r(c_2)
. reg y a b c if d>=r(c_2)
Jean-Benoit Hardouin
FUKUGAWA, N. a écrit :
Dear all,
What if we want to run 3 regression models according to the
classification of variable "d"?
centile d, centile(33)
centile d, centile(66)
reg y a b c if d<=r(c_1)
reg y a b c if d>r(c_1)&d<r(c_2)
reg y a b c if d>=r(c_2)
Thank you in advance.
--
FUKUGAWA Nobuya, Ph.D.
[email protected]
Jean-Benoit Hardouin wrote:
You can try
. centile d, centile(33)
. reg y a b c if d>r(c_1)
Best,
Jean-Benoit Hardouin
FUKUGAWA, N. a écrit :
Dear all,
Suppose we want to limit observations where one variable records a
larger value
than its top quartile, we can write as follows.
sum d,detail
reg y a b c if d>r(p75)
However, this program allows only fixed thresholds such as 1, 10,
and 75 percent.
How can I use other thresholds such as r(p33) in the program?
Or, is there any program to do the same?
Thanks in advance.
*
* 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/
--
*********************************************
Jean-Benoit Hardouin
Biostatisticien
Observatoire Régional de la Santé du Centre
BP 2439
1, rue Porte Madeleine
45032 Orléans Cedex 1
tél : 02 38 74 48 80
fax : 02 38 74 48 81
Email : [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/
