Frequencies for first 10,000 rows of psych_srvc_cd variable in pos2015 dataset 

  Services: |
      Adult |
  Inpatient |
Psychiatric |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,580       85.80       85.80
          0 |        930        9.30       95.10
          1 |        346        3.46       98.56
          2 |         80        0.80       99.36
          3 |         64        0.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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