Frequencies for first 10,000 rows of prov2415 variable in pos1993 dataset :

       srv: |
psychiatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,856       88.56       88.56
          0 |        649        6.49       95.05
          1 |        351        3.51       98.56
          2 |        105        1.05       99.61
          3 |         39        0.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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