Frequencies for first 10,000 rows of eimmregr variable in namcs2014 dataset :

          Does practice have |
    computerized capability: |
     electronic reporting to |
                immunization |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        804        8.04        8.04
                         Yes |      4,291       42.91       50.95
                          No |      4,006       40.06       91.01
Yes, but turned off/not used |        899        8.99      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017