Frequencies for first 10,000 rows of ft_srgry_sw variable in pos2000 dataset :

 spec: foot |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,327       93.27       93.27
          N |        398        3.98       97.25
          Y |        275        2.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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