Frequencies for first 10,000 rows of ft_srgry_sw variable in pos2007 dataset :

 spec: foot |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,666       96.66       96.66
          N |        199        1.99       98.65
          Y |        135        1.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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