FILENAME HV 'C:\NHANES3\HV.DAT' LRECL=8;            
**** LRECL includes 2 positions for CRLF, assuming use of PC SAS ;              
                                                                                
    DATA WORK;                                                                  
      INFILE HV MISSOVER;                                                       
                                                                                
      LENGTH                                                                    
        SEQN      7                                                             
        HVP       8                                                             
      ;                                                                         
                                                                                
      FORMAT                                                                    
      ;                                                                         
                                                                                
     INPUT                                                                      
        SEQN     1-5                                                            
        HVP      6                                                              
     ;                                                                          
                                                                                
      LABEL                                                                     
        SEQN     = "Respondent identification number"                           
        HVP      = "Antibody to human papillomavirus-16"                        
      ;   

    RUN; 

	proc contents data=work;
	run;
              
proc freq data=work;
 tables hvp/missing list;
run; 

proc compare base=in.HV_original_sasdata compare=work;
 id seqn;
run;