Frequencies for first 10,000 rows of scopproc variable in namcs2005 dataset :

      scope |
  procedure |
 ordered or |
   provided |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,843       98.43       98.43
          1 |        157        1.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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