Frequencies for first 10,000 rows of anyimage variable in namcs2011 dataset :

Any imaging |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,762       87.62       87.62
        Yes |      1,238       12.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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