Creating and Modifying Variables
Accumulating Totals
It
is often useful to create a variable that accumulates the values of
another variable.
Suppose you want to create the
data set Clinic.Stress and to add a new variable, SumSec, to
accumulate the total number of elapsed seconds in treadmill stress
tests.
Clinic.Stress Data Set
To
add the result of an expression to an accumulator variable, you can
use a sum statement in your DATA step.
|
General form, sum statement:
variable+expression;
where
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