Frequencies for first 10,000 rows of oriented variable in nhamcsed2003 dataset :

 oriented x |
          3 |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |        954        9.54        9.54
        yes |      7,005       70.05       79.59
         no |        345        3.45       83.04
    unknown |      1,696       16.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016