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

     msa or |
    non-msa |
       area |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,750       87.50       87.50
          2 |      1,250       12.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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