Frequencies for first 10,000 rows of ped_srvc_cd variable in pos2007 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,682       86.82       86.82
          0 |        705        7.05       93.87
          1 |        560        5.60       99.47
          2 |         32        0.32       99.79
          3 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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