One way of doing this is to ensure that -csi- sees the values of the scalars, and not their names.
csi `=a1' `=b1' `=c1' `=d1'
does that, assuming that none of a1 etc. can be interpreted as variable names. Stata ensures that the expressions given are evaluated before their results are passed to -csi-.
Note this short-cut
sum stots if heart==1
scalar a1 = r(mean)
sum stots if heart==0
scalar b1 = r(mean)
sum stotd if heart==1
scalar c1 = r(mean)
sum stotd if heart==0
csi `=a1' `=b1' `=c1' `r(mean)'
Note, however, that I haven't checked whether there is a way of getting what you want directly from the four variables.
Nick
[email protected]
Michael Eisenberg
I am attempting to create a do file to calculate means of several
variables and then use these values in the csi command.
sum stots if heart==1
scalar a1 = r(mean)
sum stots if heart==0
scalar b1 = r(mean)
sum stotd if heart==1
scalar c1 = r(mean)
sum stotd if heart==0
scalar d1 = r(mean)
csi a1 b1 c1 d1
I get an error that " 'a1' found where integer expected."
I'm not sure using scalars is the right way to accomplish this task.
Is there a way to use the computed results like r(mean) is immediate
commands?
If not, can anyone think of a way to do this without having to type in
the individual numbers.
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