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

      If yes, are notifiable |
               diseases sent |
             electronically? |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       Blank |         56        0.56        0.56
                     Unknown |        225        2.25        2.81
              Not applicable |      7,537       75.37       78.18
                         Yes |      1,520       15.20       93.38
                          No |        417        4.17       97.55
Yes, but turned off/not used |        245        2.45      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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