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

          Does practice have |
    computerized capability: |
     viewing imaging results |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        366        3.66        3.66
         Yes, used routinely |      5,079       50.79       54.45
 Yes, but NOT used routinely |        543        5.43       59.88
Yes, but turned off/not used |        383        3.83       63.71
                          No |      3,629       36.29      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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