Frequencies for first 10,000 rows of enotdise variable in nhamcsed2009 dataset :

if yes, are |
 notifiable |
   diseases |
       sent |
electronica |
       lly? |      Freq.     Percent        Cum.
------------+-----------------------------------
         -8 |        546        5.46        5.46
         -7 |      6,229       62.29       67.75
          1 |      2,247       22.47       90.22
          2 |        978        9.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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