Frequencies for first 10,000 rows of urine variable in nhamcsopd1992 dataset :

 Urinalysis |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,687       86.87       86.87
          1 |      1,313       13.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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