Frequencies for first 10,000 rows of enotdis variable in namcs2008 dataset :

   if yes, are |
    notifiable |
 diseases sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        352        3.52        3.52
       unknown |        288        2.88        6.40
not applicable |      7,956       79.56       85.96
           yes |        630        6.30       92.26
            no |        774        7.74      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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