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

   Does your practice have a |
     computerized system for |
     electronic reporting to |
                      immuni |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       Blank |         81        0.81        0.81
                     Unknown |        654        6.54        7.35
                         Yes |      3,911       39.11       46.46
                          No |      4,944       49.44       95.90
Yes, but turned off/not used |        410        4.10      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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