Frequencies for first 10,000 rows of prov2375 variable in pos2006 dataset :

       srv: |
   physical |
 therapy #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,996       99.96       99.96
          2 |          2        0.02       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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