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

          Does practice have |
    computerized capability: |
  exchanging secure messages |
                   with pati |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        370        3.70        3.70
                         Yes |      2,929       29.29       32.99
                          No |      5,964       59.64       92.63
Yes, but turned off/not used |        737        7.37      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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