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

   Hospital |
      Based |
     Switch |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,120       11.20       11.20
          N |      8,863       88.63       99.83
          Y |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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