Frequencies for first 10,000 rows of psych_srvc_cd variable in pos2009 dataset :

       SRV: |
PSYCHIATRIC |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,638       86.38       86.38
          0 |        862        8.62       95.00
          1 |        366        3.66       98.66
          2 |         81        0.81       99.47
          3 |         53        0.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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