Frequencies for first 10,000 rows of opthlmc_srgy_srvc_cd variable in pos2017 d

  Services: |
 Ophthalmic |
    Surgery |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,569       85.69       85.69
          0 |      1,115       11.15       96.84
          1 |        231        2.31       99.15
          2 |         33        0.33       99.48
          3 |         52        0.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018