Frequencies for first 10,000 rows of diagscrn variable in nhamcsed2005 dataset :

       were |
 diagnostic |
   services |
 ordered or |
  provided? |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      2,324       23.24       23.24
        yes |      7,314       73.14       96.38
  no answer |        362        3.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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