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

          Does practice have |
    computerized capability: |
     electronic reporting to |
                immunization |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        932        9.32        9.32
         Yes, used routinely |      2,462       24.62       33.94
 Yes, but NOT used routinely |        470        4.70       38.64
Yes, but turned off/not used |        691        6.91       45.55
                          No |      5,445       54.45      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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