Frequencies for first 10,000 rows of genmedxm variable in nhamcsopd2001 dataset :

    general |
    medical |
       exam |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,184       71.84       71.84
          1 |      2,816       28.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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