Frequencies for first 10,000 rows of anyimage variable in namcs2013 dataset :

Any imaging |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,573       85.73       85.73
        Yes |      1,427       14.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017