Frequencies for first 10,000 rows of psych_srvc_cd variable in pos1996 dataset :

       srv: |
psychiatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,803       88.03       88.03
          0 |        647        6.47       94.50
          1 |        391        3.91       98.41
          2 |        108        1.08       99.49
          3 |         51        0.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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