Frequencies for first 10,000 rows of prov2415 variable in pos1995 dataset :

       srv: |
psychiatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,933       89.33       89.33
          0 |        600        6.00       95.33
          1 |        339        3.39       98.72
          2 |         84        0.84       99.56
          3 |         44        0.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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