Frequencies for first 10,000 rows of prov2360 variable in pos1995 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,933       89.33       89.33
          0 |        520        5.20       94.53
          1 |        509        5.09       99.62
          2 |         31        0.31       99.93
          3 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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