Frequencies for first 10,000 rows of hlt_d_chd variable in mcbsatc2013 dataset 

   Coronary |
      heart |
    disease |
 since last |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
         -8 |         89        0.89        0.89
         -7 |          5        0.05        0.94
          1 |        308        3.08        4.02
          2 |      9,598       95.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 24 May 2016