Frequencies for first 10,000 rows of urine variable in nhamcsopd2006 dataset :

 urinalysis |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,062       90.62       90.62
        Yes |        938        9.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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