Frequencies for first 10,000 rows of op_srgry_unit_srvc_cd variable in pos2012 

   Services |
  Provided: |
 Outpatient |
    Surgery |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,606       86.06       86.06
          0 |        607        6.07       92.13
          1 |        700        7.00       99.13
          2 |         43        0.43       99.56
          3 |         44        0.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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