Frequencies for first 10,000 rows of urncx variable in namcs2015 dataset :

   Culture, |
      urine |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,768       97.68       97.68
          1 |        232        2.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017