Frequencies for first 10,000 rows of diagscrn variable in nhamcsed2006 dataset :

       were |
 diagnostic |
   services |
 ordered or |
  provided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      2,115       21.15       21.15
        yes |      7,692       76.92       98.07
  no answer |        193        1.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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