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

any imaging |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      8,772       87.72       87.72
        yes |      1,228       12.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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