Frequencies for first 10,000 rows of diagscrn variable in nhamcsopd2008 dataset :

  were diagnostic |
 services ordered |
     or provided? |      Freq.     Percent        Cum.
------------------+-----------------------------------
               no |        662        6.62        6.62
              yes |      9,268       92.68       99.30
entire item blank |         70        0.70      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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