Frequencies for first 10,000 rows of psych_unit_sw variable in pos2012 dataset 

Psychiatric |
Unit Switch |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,057       80.57       80.57
          N |      1,630       16.30       96.87
          Y |        313        3.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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