Frequencies for first 10,000 rows of pt_srvc_cd variable in pos2005 dataset :

       srv: |
   physical |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,349       63.49       63.49
          0 |        279        2.79       66.28
          1 |      1,374       13.74       80.02
          2 |      1,401       14.01       94.03
          3 |        597        5.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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