Frequencies for first 10,000 rows of mhprov variable in nhamcsed2009 dataset :

     mhprov |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,813       98.13       98.13
          1 |        187        1.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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