Frequencies for first 10,000 rows of srvy_ever_sb_sw variable in pos2009 dataset :

    CURRENT |
SURVEY EVER |
   SWINGBED |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,649       86.49       86.49
          N |      1,111       11.11       97.60
          Y |        240        2.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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