Frequencies for first 10,000 rows of urinecx variable in nhamcsed2003 dataset :

      urine |
    culture |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,497       94.97       94.97
        yes |        503        5.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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