Frequencies for first 10,000 rows of depress variable in namcs2009 dataset :

 depression |
  screening |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,886       98.86       98.86
        yes |        114        1.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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