Frequencies for first 10,000 rows of diagscrn variable in nhamcsed2003 dataset :

       were |
diag/screen |
       serv |
 ordered or |
  provided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      1,041       10.41       10.41
        yes |      8,848       88.48       98.89
  no answer |        111        1.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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