options yearcutoff = 1900;
data brca;
infile "E:\Epid759\brca.dat";
input  idnum 1-4 stopmens 5 agestop1 6-7 
       numpreg1 8-9 agebirth 10-11
       mamfreq4 12 @13 dob mmddyy8. educ 21-22
	   totincom 23 smoker 24 weight1 25-27;
	   format dob mmddyy10.;
  if stopmens = 9 then stopmens=.;
  if agestop1 = 88 then agestop1=.;
  if agestop1 = 99 then agestop1=.;
  if numpreg1 = 88 then numpreg1 = .;
  if numpreg1 = 99 then numpreg1 = .;
  if agebirth = 88 then agebirth = .;
  if agebirth = 99 then agebirth = .;
  if mamfreq4 = 9 then mamfreq4 = .;
  if dob = "09SEP1999"D then dob=.;
  if educ = 99 then educ = .;
  if totincom = 9 then totincom = .;
  if weight1 = 999 then weight1 = .;
run;

proc means data=brca;
run;
proc freq data=brca;
 tables dob;
run;

libname sasdata2 "E:\epid759\sasdata2";
data sasdata2.brca;
set brca;
run;