Frequencies for first 10,000 rows of prov6260 variable in pos2006 dataset :

       srv: |
reconstruct |
ive surgery |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |      1,262       12.62       99.72
          1 |         25        0.25       99.97
          2 |          1        0.01       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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