Frequencies for first 10,000 rows of orthpdc_srgy_srvc_cd variable in pos2010 dataset :

       SRV: |
 ORTHOPEDIC |
    SURGERY |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,626       86.26       86.26
          0 |      1,142       11.42       97.68
          1 |        178        1.78       99.46
          2 |         25        0.25       99.71
          3 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017