Frequencies for first 10,000 rows of ft_srgry_sw variable in pos2010 dataset :

 SPEC: FOOT |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,632       96.32       96.32
          N |        227        2.27       98.59
          Y |        141        1.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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