- FREQ variable ;
The variable in the FREQ statement identifies a variable
that contains the frequency of occurrence of each observation.
PROC LOGISTIC treats each observation as if it appears n
times, where n is the value of the FREQ variable for the
observation. If it is not an integer, the frequency value is
truncated to an integer. If the frequency value is less than
1 or missing, the observation is not used in the model fitting.
When the FREQ statement is not specified, each observation is assigned
a frequency of 1.
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