Frequencies for first 10,000 rows of diagscrn variable in nhamcsed1998 dataset :

       were |
diagnostic/ |
screen serv |
ordered/pro |
     vided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      1,134       11.34       11.34
        Yes |      8,861       88.61       99.95
  No answer |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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