Frequencies for first 10,000 rows of urinecx variable in nhamcsed2002 dataset :

      urine |
    culture |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,498       94.98       94.98
          1 |        502        5.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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