Frequencies for first 10,000 rows of urine variable in nhamcsopd2005 dataset :

 urinalysis |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      8,788       87.88       87.88
        yes |      1,212       12.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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