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

   Does your practice have a |
     computerized system for |
  exchanging secure messages |
                         wit |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       Blank |         62        0.62        0.62
                     Unknown |        457        4.57        5.19
                         Yes |      3,048       30.48       35.67
                          No |      5,669       56.69       92.36
Yes, but turned off/not used |        764        7.64      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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