Frequencies for first 10,000 rows of tot_ofsite_opthlmc_srgry_cnt variable in pos2016 dataset :

   Off-Site |
     Count: |
 Ophthalmic |
    Surgery |
      Units |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,488       14.88       14.88
          1 |         28        0.28       15.16
          2 |          4        0.04       15.20
          3 |          1        0.01       15.21
          . |      8,479       84.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017