Frequencies for first 10,000 rows of enotdis variable in namcs2006 dataset :

   if yes, are |
    notifiable |
 diseases sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           yes |        419        4.19        4.19
            no |        195        1.95        6.14
       unknown |          9        0.09        6.23
not applicable |      9,148       91.48       97.71
         blank |        229        2.29      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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