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RE: st: event history analysis for multiple response and repeated events


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: event history analysis for multiple response and repeated events
Date   Sun, 8 Mar 2009 18:22:09 -0000

In addition to Martin Weiss' suggestions, this is just to underline that


if <condition> { 


} 

_never_ defines a loop in Stata, as it only ever defines a block of
statements to be executed once if and only if <condition> is true
(meaning, non-zero). Whatever some alternative software you may be used
to does, that's not the Stata way. 

Nick 
n.j.cox@durham.ac.uk 

fernando andrade

i am new using stata, i am having problems with this simple loop uisng
if.

gen grade=.

if cnt==484{
 replace grade = 1 if SC04Q01 == 1 & SC04Q02 == 1 & SC04Q03 == 1 &
SC04Q04 == 1 & SC04Q05 == 1 & SC04Q06 == 1 & SC04Q07 == 0 & SC04Q08 ==
0 & SC04Q09 == 0 & SC04Q10 == 0 &/// SC04Q11 == 0 & SC04Q12 == 0
  replace grade = 2 if SC04Q01 == 0 & SC04Q02 == 0 & SC04Q03 == 0 &
SC04Q04 == 0 & SC04Q05 == 0 & SC04Q06 == 0 & SC04Q07 == 1 & SC04Q08 ==
1 & SC04Q09 == 1 & SC04Q10 == 0 &///  SC04Q11 == 0 & SC04Q12 == 0
 replace grade = 3 if SC04Q01 == 0 & SC04Q02 == 0 & SC04Q03 == 0 &
SC04Q04 == 0 & SC04Q05 == 0 & SC04Q06 == 0 & SC04Q07 == 0 & SC04Q08 ==
0 & SC04Q09 == 0 & SC04Q10 == 1 &/// SC04Q11 == 1 & SC04Q12 == 1
}

the replace commands work well without the loop, it makes the
transformations in all the data set.
but i want to restrict the transformations to only those who have a
value of 484 in cnt.

any ideas why the loop is not working


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