Frequencies for first 10,000 rows of prov2360 variable in pos1991 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,770       87.70       87.70
          0 |        577        5.77       93.47
          1 |        600        6.00       99.47
          2 |         42        0.42       99.89
          3 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016