Frequencies for first 10,000 rows of prov2370 variable in pos1996 dataset :

       srv: |
   physical |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,911       69.11       69.11
          0 |        299        2.99       72.10
          1 |      1,157       11.57       83.67
          2 |      1,239       12.39       96.06
          3 |        394        3.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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