Frequencies for first 10,000 rows of psych_unit_sw variable in pos1994 dataset :

psychiatric |
       unit |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,787       97.87       97.87
          Y |        213        2.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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