Frequencies for first 10,000 rows of urine variable in nhamcsed1997 dataset :

 urinalysis |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,373       83.73       83.73
          1 |      1,627       16.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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