Frequencies for first 10,000 rows of urine variable in nhamcsed2009 dataset :

 urinalysis |
       (ua) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,790       77.90       77.90
          1 |      2,210       22.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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