Frequencies for first 10,000 rows of op_psych_srvc_cd variable in pos2011 dataset :

   Services |
  Provided: |
Psychiatric |
          - |
 Outpatient |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |      1,273       12.73       98.87
          1 |         80        0.80       99.67
          2 |         17        0.17       99.84
          3 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019