Frequencies for first 10,000 rows of mentstat variable in nhamcsed1996 dataset :

     mental |
status exam |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,543       85.43       85.43
          1 |      1,457       14.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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