Frequencies for first 10,000 rows of prov2360 variable in pos1997 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,792       87.92       87.92
          0 |        570        5.70       93.62
          1 |        587        5.87       99.49
          2 |         40        0.40       99.89
          3 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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