Frequencies for first 10,000 rows of mm_uoper variable in natl2011 dataset :

  Unplanned |
  Operation |
627=f_mm_or |
          R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015