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

   other md |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,604       96.04       96.04
          1 |        396        3.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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