Frequencies for first 10,000 rows of prov6255 variable in pos2006 dataset :

       srv: |
psychiatric |
          - |
 outpatient |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |      1,267       12.67       99.77
          1 |         20        0.20       99.97
          2 |          2        0.02       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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