Frequencies for first 10,000 rows of thorc_srgry_sw variable in pos2011 dataset :

Speciality: |
   Thoracic |
    Surgery |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        354        3.54        3.54
          N |      9,635       96.35       99.89
          Y |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019