***********************************************************************
* Program:  C:\NHANES\AppendMerge_MergeData.sas                       *
* Proposal: Merge NHANES Data                                         *                                            
***********************************************************************;
libname nh "C:\NHANES\data\your_dir";
options ls=72;

proc sort data=nh.DEMO_4yr;
	by SEQN;
proc sort data=nh.BPX_4yr;
	by SEQN;
proc sort data=nh.BPQ_4yr;
	by SEQN;
proc sort data=nh.MCQ_4yr;
	by SEQN;
proc sort data=nh.LAB13_4yr;
	by SEQN;
run;
data DEMO_BP (drop=dmdeduc) ;
	merge nh.DEMO_4yr
		nh.BPX_4yr
		nh.BPQ_4yr
		nh.MCQ_4yr
		nh.LAB13_4yr;
	by SEQN;
run;
proc contents data=DEMO_BP varnum;
proc means data=DEMO_BP N Nmiss min max maxdec=2;
run;