Frequencies for first 10,000 rows of diagscrn variable in namcs2007 dataset :

  were diagnostic |
 services ordered |
     or provided? |      Freq.     Percent        Cum.
------------------+-----------------------------------
               no |        508        5.08        5.08
              yes |      9,426       94.26       99.34
entire item blank |         66        0.66      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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