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*  Research Computing Services                            *;
*  Introduction to SAS                                    *;
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*  SAS Univariate procedure                               *;
*                                                         *;
*  1. Execute the code as is and explore the output       *;
*  2. Change the variable in var and where statements     *;
*     and examine how output changes;                     *;
*                                                         *;
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* Read more:                                               ;
*    univariate:  https://documentation.sas.com/doc/en/pgmsascdc/9.4_3.5/procstat/procstat_univariate_syntax01.htm  *;
*    means and univariate: https://www.sas.com/content/dam/SAS/en_ca/User%20Group%20Presentations/Winnipeg-User-Group/MarjorieSmith-PROC-UNIVARIATE-PROCMEANS.pdf ;
*    univariate examples: https://documentation.sas.com/doc/en/pgmsascdc/9.4_3.5/procstat/procstat_univariate_examples.htm
* ;


/* Include sas program that sets input library */
%include "setup.sas";


/* deatiled information about the distribution of a numeric variable */
proc univariate data=mydata.med_visits;
    title "Distribution of the Height Variable";
	var Height ;
run;

/* detailed summary for a specific variable */
proc univariate data=mydata.med_visits;
    title "Distribution of the Height Variable grouped by Sex for Age < 50";
	var Height ;
	class Sex;
	where Age < 50;
run;

/* plot histogram */
proc univariate data=mydata.med_visits;
    title "Histogram of DBP";
    var DBP;
	histogram;
run;

/* add normal curve */
proc univariate data=mydata.med_visits;
    title "Histogram of DBP";
	var DBP;
	histogram /normal;
run;