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

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,731       87.31       87.31
          0 |        667        6.67       93.98
          1 |        551        5.51       99.49
          2 |         33        0.33       99.82
          3 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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