Frequencies for first 10,000 rows of anyimage variable in namcs2012 dataset :

Any imaging |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,756       87.56       87.56
        Yes |      1,244       12.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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