Frequencies for first 10,000 rows of prov2370 variable in pos2004 dataset :

       srv: |
   physical |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,498       64.98       64.98
          0 |        267        2.67       67.65
          1 |      1,341       13.41       81.06
          2 |      1,329       13.29       94.35
          3 |        565        5.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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