Frequencies for first 10,000 rows of enotdiso variable in nhamcsopd2008 dataset :

   if yes, are |
    notifiable |
 diseases sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        309        3.09        3.09
       unknown |         36        0.36        3.45
not applicable |      7,612       76.12       79.57
           yes |      1,077       10.77       90.34
            no |        966        9.66      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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