Frequencies for first 10,000 rows of prov2360 variable in pos2006 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |        682        6.82       93.92
          1 |        559        5.59       99.51
          2 |         30        0.30       99.81
          3 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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