Frequencies for first 10,000 rows of diagscrn variable in nhamcsed1999 dataset :

       were |
diagnostic/ |
screen serv |
ordered/pro |
     vided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |        999        9.99        9.99
        Yes |      9,001       90.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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