Frequencies for first 10,000 rows of urine variable in namcs1994 dataset :

 urinalysis |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,845       88.45       88.45
          1 |      1,155       11.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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