Frequencies for first 10,000 rows of ped_srvc_cd variable in pos2002 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,812       88.12       88.12
          0 |        599        5.99       94.11
          1 |        544        5.44       99.55
          2 |         31        0.31       99.86
          3 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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