Frequencies for first 10,000 rows of op_srgry_unit_srvc_cd variable in pos2013 

  Services: |
 Outpatient |
    Surgery |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,601       86.01       86.01
          0 |        601        6.01       92.02
          1 |        696        6.96       98.98
          2 |         45        0.45       99.43
          3 |         57        0.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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