Frequencies for first 10,000 rows of enotdise variable in nhamcsed2006 dataset :

   if yes, are |
    notifiable |
 diseases sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           yes |      1,083       10.83       10.83
            no |        524        5.24       16.07
       unknown |        255        2.55       18.62
not applicable |      3,454       34.54       53.16
         blank |      4,684       46.84      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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