Frequencies for first 10,000 rows of bladcath variable in nhamcsed2015 dataset 

    Bladder |
   catheter |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,851       98.51       98.51
        Yes |        149        1.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017