Frequencies for first 10,000 rows of primaryreason variable in nadacc20160420 dataset :

   Primary Reason |      Freq.     Percent        Cum.
------------------+-----------------------------------
      Survey Rate |      9,982       99.82       99.82
   WAC Adjustment |         18        0.18      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Feb 2018