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

If reporting to immunization |
     registries, are they in |
 standards specified by Mean |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        369        3.69        3.69
              Not applicable |      7,068       70.68       74.37
                         Yes |      2,282       22.82       97.19
                          No |        217        2.17       99.36
Yes, but turned off/not used |         64        0.64      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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