SAS coding.

Using the data set below.

Generate a frequency distribution of the new tertiles variable for age at visit 9.

Give your new variable a label and format your variable to indicate which is tertile 1, 2, and 3.

How would I do this?

data test; 2 set neslib.nghsdatal; run 1 5/91/ 6 Proc contents data-test; 7 run 9/92/ 10 Proc means data-test; 11 var activescorel activescore2 activescore activescore18; 12 run; 14 /37 15 proc means median min pi p25 pse pse p75 099 max maxdec-2; 16 var activescorel; 17 run 19 /"937 20 proc univariate data-nghslib.ngsdato: 21 var ActiveScore10; 22 histogram ActiveScorele; run; data test; 2 set neslib.nghsdatal; run 1 5/91/ 6 Proc contents data-test; 7 run 9/92/ 10 Proc means data-test; 11 var activescorel activescore2 activescore activescore18; 12 run; 14 /37 15 proc means median min pi p25 pse pse p75 099 max maxdec-2; 16 var activescorel; 17 run 19 /"937 20 proc univariate data-nghslib.ngsdato: 21 var ActiveScore10; 22 histogram ActiveScorele; run