Frequencies for first 10,000 rows of prov2360 variable in pos1999 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,885       88.85       88.85
          0 |        545        5.45       94.30
          1 |        527        5.27       99.57
          2 |         33        0.33       99.90
          3 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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