FREQプロシジャ


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<文字データの集計>
 【例題】ある治験での喫煙者の有無を性別ごとに集計する
/*テストデータ*/
proc format ;
  value f_sex 1 = "男"
              2 = "女";
  value noyes 0 = "NO"
              1 = "YES";
run;
 
data test;
  length sex 8. drug $10 smoke dose 8.;
  do i = 1 to 112 ; drug = "medicine" ; sex = 1 ; smoke = 0 ; dose = 2 ; output; end;
  do i = 1 to 137 ; drug = "medicine" ; sex = 1 ; smoke = 1 ; dose = 2 ; output; end;
  do i = 1 to  83 ; drug = "medicine" ; sex = 2 ; smoke = 0 ; dose = 2 ; output; end;
  do i = 1 to 141 ; drug = "medicine" ; sex = 2 ; smoke = 1 ; dose = 2 ; output; end;
  do i = 1 to  90 ; drug = "plasebo"  ; sex = 1 ; smoke = 0 ; dose = 2 ; output; end;
  do i = 1 to  75 ; drug = "plasebo"  ; sex = 1 ; smoke = 1 ; dose = 2 ; output; end;
  do i = 1 to  86 ; drug = "plasebo"  ; sex = 2 ; smoke = 0 ; dose = 2 ; output; end;
  do i = 1 to  64 ; drug = "plasebo"  ; sex = 2 ; smoke = 1 ; dose = 2 ; output; end;
run;
/*1次元の度数集計*/
proc freq data = test ;
  tables sex  smoke / out = out1; /*喫煙者の有無の集計結果のみ出力*/
  format sex f_sex. smoke noyes.;
run;
 
 
proc freq data = test ;
  tables sex   / out = out1_1;   /*性別の集計結果*/
  tables smoke / out = out1_2;  /*喫煙者の有無の集計結果*/
  format sex f_sex. smoke noyes.;
run;
/*2次元のクロス集計*/
proc freq data = test ;
  tables sex * smoke / out = out2;
  format sex f_sex. smoke noyes.;
run;
/*薬剤別、性別と喫煙者の有無のクロス集計*/
proc freq data = test ;
  tables sex * smoke / out = out3;
  by drug ;
  format sex f_sex. smoke noyes.;
run;
 
proc freq data = test ;
  tables drug * sex * smoke / out = out4; 
  format sex f_sex. smoke noyes.;
run;
 
/*性別と喫煙者の有無別の投与量の集計*/
proc freq data = test ;
  tables drug * sex * smoke / out = out5; 
  weight dose ;
  format sex f_sex. smoke noyes.;
run;



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