Frequencies for first 10,000 rows of diagscrn variable in nhamcsed1997 dataset :

       were |
diagnostic/ |
screen serv |
ordered/pro |
     vided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      1,194       11.94       11.94
        Yes |      8,800       88.00       99.94
  No answer |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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