Frequencies for first 10,000 rows of oral_srgry_sw variable in pos2004 dataset :

 spec: oral |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,098       90.98       90.98
          N |        694        6.94       97.92
          Y |        208        2.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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