Frequencies for first 10,000 rows of pulsoxim variable in nhamcsed2001 dataset :

      pulse |
   oximetry |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,429       84.29       84.29
          1 |      1,571       15.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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