Frequencies for first 10,000 rows of chow_sw variable in pos2014 dataset :

       CHOW |
  Indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,762       87.62       87.62
          N |      1,181       11.81       99.43
          Y |         57        0.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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