Frequencies for first 10,000 rows of diagscrn variable in nhamcsed2008 dataset :

       were |
 diagnostic |
   services |
 ordered or |
  provided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      3,032       30.32       30.32
        yes |      6,780       67.80       98.12
  no answer |        188        1.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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