data comb_data;
length comb_x $ 100;
input comb_x $ @@;
/*輸入所有x變數名稱，方便隨機抽取，放入不同模型裡*/
datalines;
area da hfs i0 pa500
;
run;
%macro logistic_real_adabost(data = ,
y = ,
y_testing=,
x = ,
ab = ,
training_obs=,
...
