Frequencies for first 10,000 rows of anyimage variable in namcs2007 dataset :

any imaging |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      8,867       88.67       88.67
        yes |      1,133       11.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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