Frequencies for first 10,000 rows of medasst variable in nhamcsopd1996 dataset :

    medical |
  assistant |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,079       90.79       90.79
          1 |        921        9.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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