Frequencies for first 10,000 rows of tot_ofsite_opthlmc_srgry_cnt variable in pos2018 dataset :

   Off-Site |
     Count: |
 Ophthalmic |
    Surgery |
      Units |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,503       15.03       15.03
          1 |         29        0.29       15.32
          2 |          4        0.04       15.36
          3 |          1        0.01       15.37
          . |      8,463       84.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019