Frequencies for first 10,000 rows of ped_srvc_cd variable in pos2010 dataset :

       SRV: |
  PEDIATRIC |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,626       86.26       86.26
          0 |        756        7.56       93.82
          1 |        562        5.62       99.44
          2 |         33        0.33       99.77
          3 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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