Frequencies for first 10,000 rows of prov6255 variable in pos2007 dataset :

       srv: |
psychiatric |
          - |
 outpatient |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,682       86.82       86.82
          0 |      1,282       12.82       99.64
          1 |         29        0.29       99.93
          2 |          5        0.05       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017