Frequencies for chronicanddisablingmentalhea variable in snp2015 dataset :

Chronic and |
  Disabling |
     Mental |
     Health |
 Conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,748       99.79       99.79
          * |         18        0.21      100.00
------------+-----------------------------------
      Total |      8,766      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016