Frequencies for first 10,000 rows of prov6250 variable in pos2005 dataset :

       srv: |
psychiatric |
- geriatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,731       87.31       87.31
          0 |      1,256       12.56       99.87
          1 |          9        0.09       99.96
          2 |          1        0.01       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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