Frequencies for first 10,000 rows of urine variable in nhamcsed1993 dataset :

 urinalysis |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,370       83.70       83.70
          1 |      1,630       16.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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