Frequencies for first 10,000 rows of diagscrn variable in nhamcsed2002 dataset :

       were |
diag/screen |
       serv |
 ordered or |
  provided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |        975        9.75        9.75
        Yes |      8,881       88.81       98.56
  No answer |        144        1.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016