Frequencies for first 10,000 rows of opthlmc_srgy_srvc_cd variable in pos2013 d

  Services: |
 Ophthalmic |
    Surgery |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,601       86.01       86.01
          0 |      1,143       11.43       97.44
          1 |        187        1.87       99.31
          2 |         32        0.32       99.63
          3 |         37        0.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016