Frequencies for first 10,000 rows of rcnstrctn_srgy_srvc_cd variable in pos2009 dataset :

       SRV: |
RECONSTRUCT |
IVE SURGERY |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,638       86.38       86.38
          0 |      1,279       12.79       99.17
          1 |         63        0.63       99.80
          2 |         12        0.12       99.92
          3 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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