Frequencies for first 10,000 rows of urine variable in nhamcsed2006 dataset :

 urinalysis |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      7,920       79.20       79.20
        yes |      2,080       20.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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